./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c5568751dd37ae3ac79e02a0fd7273b3ab2af9e94f13bec2f84e6a22bfe26f6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:51:04,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:51:04,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:51:04,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:51:04,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:51:04,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:51:04,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:51:04,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:51:04,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:51:04,611 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:51:04,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:51:04,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:51:04,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:51:04,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:51:04,611 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:51:04,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:51:04,612 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:51:04,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:51:04,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:51:04,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:51:04,613 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 -> 2c5568751dd37ae3ac79e02a0fd7273b3ab2af9e94f13bec2f84e6a22bfe26f6 [2025-03-08 06:51:04,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:51:04,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:51:04,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:51:04,847 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:51:04,848 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:51:04,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c [2025-03-08 06:51:05,992 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327912679/b028295c0bfc4e25bcd9cce5cdac7dd4/FLAG7439aa42b [2025-03-08 06:51:06,551 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:51:06,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c [2025-03-08 06:51:06,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327912679/b028295c0bfc4e25bcd9cce5cdac7dd4/FLAG7439aa42b [2025-03-08 06:51:07,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327912679/b028295c0bfc4e25bcd9cce5cdac7dd4 [2025-03-08 06:51:07,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:51:07,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:51:07,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:51:07,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:51:07,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:51:07,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:51:07" (1/1) ... [2025-03-08 06:51:07,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589dd14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:07, skipping insertion in model container [2025-03-08 06:51:07,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:51:07" (1/1) ... [2025-03-08 06:51:07,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:51:08,345 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_label43+token_ring.04.cil-2.c[381679,381692] [2025-03-08 06:51:08,371 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_label43+token_ring.04.cil-2.c[383339,383352] [2025-03-08 06:51:08,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:51:08,546 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:51:09,004 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_label43+token_ring.04.cil-2.c[381679,381692] [2025-03-08 06:51:09,007 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_label43+token_ring.04.cil-2.c[383339,383352] [2025-03-08 06:51:09,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:51:09,053 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:51:09,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09 WrapperNode [2025-03-08 06:51:09,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:51:09,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:51:09,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:51:09,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:51:09,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,542 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12735 [2025-03-08 06:51:09,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:51:09,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:51:09,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:51:09,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:51:09,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,622 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,741 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:51:09,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,889 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:51:09,991 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:51:09,991 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:51:09,991 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:51:09,992 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (1/1) ... [2025-03-08 06:51:09,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:51:10,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:10,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:51:10,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:51:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:51:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:51:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:51:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:51:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:51:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:51:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:51:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-08 06:51:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-08 06:51:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:51:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:51:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:51:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:51:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:51:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:51:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:51:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:51:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:51:10,128 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:51:10,130 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:51:16,261 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:51:16,262 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:51:16,263 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:51:16,263 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:51:16,263 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:51:16,263 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:51:16,264 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:51:16,481 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2025-03-08 06:51:16,481 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:51:16,535 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:51:16,535 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:51:16,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:51:16 BoogieIcfgContainer [2025-03-08 06:51:16,536 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:51:16,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:51:16,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:51:16,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:51:16,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:51:07" (1/3) ... [2025-03-08 06:51:16,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363f4066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:51:16, skipping insertion in model container [2025-03-08 06:51:16,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:51:09" (2/3) ... [2025-03-08 06:51:16,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363f4066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:51:16, skipping insertion in model container [2025-03-08 06:51:16,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:51:16" (3/3) ... [2025-03-08 06:51:16,546 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-2.c [2025-03-08 06:51:16,558 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:51:16,560 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.04.cil-2.c that has 8 procedures, 2371 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2025-03-08 06:51:16,661 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:51:16,671 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;@7f265795, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:51:16,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:51:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 2371 states, 2342 states have (on average 1.8509820666097352) internal successors, (4335), 2346 states have internal predecessors, (4335), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 06:51:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:16,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:16,696 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] [2025-03-08 06:51:16,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:16,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash -169168035, now seen corresponding path program 1 times [2025-03-08 06:51:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396281323] [2025-03-08 06:51:16,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:16,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:16,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:16,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:16,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:16,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396281323] [2025-03-08 06:51:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396281323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:17,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876602578] [2025-03-08 06:51:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:17,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:17,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:17,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:17,105 INFO L87 Difference]: Start difference. First operand has 2371 states, 2342 states have (on average 1.8509820666097352) internal successors, (4335), 2346 states have internal predecessors, (4335), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:17,668 INFO L93 Difference]: Finished difference Result 4918 states and 9035 transitions. [2025-03-08 06:51:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:51:17,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:17,695 INFO L225 Difference]: With dead ends: 4918 [2025-03-08 06:51:17,695 INFO L226 Difference]: Without dead ends: 2489 [2025-03-08 06:51:17,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:17,708 INFO L435 NwaCegarLoop]: 4243 mSDtfsCounter, 4508 mSDsluCounter, 8592 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4520 SdHoareTripleChecker+Valid, 12835 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:17,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4520 Valid, 12835 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:51:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2025-03-08 06:51:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2474. [2025-03-08 06:51:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2426 states have (on average 1.8272877164056058) internal successors, (4433), 2430 states have internal predecessors, (4433), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 06:51:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4498 transitions. [2025-03-08 06:51:17,837 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4498 transitions. Word has length 89 [2025-03-08 06:51:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:17,837 INFO L471 AbstractCegarLoop]: Abstraction has 2474 states and 4498 transitions. [2025-03-08 06:51:17,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4498 transitions. [2025-03-08 06:51:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:17,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:17,840 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] [2025-03-08 06:51:17,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:51:17,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:17,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 19706843, now seen corresponding path program 1 times [2025-03-08 06:51:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009870281] [2025-03-08 06:51:17,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:17,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:17,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:17,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:17,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:17,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009870281] [2025-03-08 06:51:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009870281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941962344] [2025-03-08 06:51:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:18,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:18,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:18,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:18,046 INFO L87 Difference]: Start difference. First operand 2474 states and 4498 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:18,285 INFO L93 Difference]: Finished difference Result 2845 states and 5077 transitions. [2025-03-08 06:51:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:18,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:18,299 INFO L225 Difference]: With dead ends: 2845 [2025-03-08 06:51:18,299 INFO L226 Difference]: Without dead ends: 2504 [2025-03-08 06:51:18,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:18,305 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4310 mSDsluCounter, 8245 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 12407 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:18,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 12407 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:51:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2025-03-08 06:51:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2474. [2025-03-08 06:51:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2426 states have (on average 1.8264633140972795) internal successors, (4431), 2430 states have internal predecessors, (4431), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 06:51:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4496 transitions. [2025-03-08 06:51:18,374 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4496 transitions. Word has length 89 [2025-03-08 06:51:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:18,374 INFO L471 AbstractCegarLoop]: Abstraction has 2474 states and 4496 transitions. [2025-03-08 06:51:18,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4496 transitions. [2025-03-08 06:51:18,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:18,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:18,376 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] [2025-03-08 06:51:18,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:51:18,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:18,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -935814436, now seen corresponding path program 1 times [2025-03-08 06:51:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827543125] [2025-03-08 06:51:18,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:18,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:18,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:18,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:18,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:18,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:18,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827543125] [2025-03-08 06:51:18,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827543125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:18,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:18,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508211157] [2025-03-08 06:51:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:18,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:18,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:18,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:18,547 INFO L87 Difference]: Start difference. First operand 2474 states and 4496 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:18,985 INFO L93 Difference]: Finished difference Result 3025 states and 5344 transitions. [2025-03-08 06:51:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:18,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:18,999 INFO L225 Difference]: With dead ends: 3025 [2025-03-08 06:51:18,999 INFO L226 Difference]: Without dead ends: 2684 [2025-03-08 06:51:19,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:19,003 INFO L435 NwaCegarLoop]: 4310 mSDtfsCounter, 4426 mSDsluCounter, 12912 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 17222 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:19,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 17222 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2025-03-08 06:51:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2633. [2025-03-08 06:51:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2565 states have (on average 1.8097465886939572) internal successors, (4642), 2570 states have internal predecessors, (4642), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2025-03-08 06:51:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4736 transitions. [2025-03-08 06:51:19,077 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4736 transitions. Word has length 89 [2025-03-08 06:51:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:19,078 INFO L471 AbstractCegarLoop]: Abstraction has 2633 states and 4736 transitions. [2025-03-08 06:51:19,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4736 transitions. [2025-03-08 06:51:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:19,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:19,081 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] [2025-03-08 06:51:19,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:51:19,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:19,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:19,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1250119611, now seen corresponding path program 1 times [2025-03-08 06:51:19,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:19,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969596096] [2025-03-08 06:51:19,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:19,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:19,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:19,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:19,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:19,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:19,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969596096] [2025-03-08 06:51:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969596096] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:19,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673772009] [2025-03-08 06:51:19,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:19,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:19,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:19,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:19,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:19,188 INFO L87 Difference]: Start difference. First operand 2633 states and 4736 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:19,603 INFO L93 Difference]: Finished difference Result 3521 states and 6101 transitions. [2025-03-08 06:51:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:19,614 INFO L225 Difference]: With dead ends: 3521 [2025-03-08 06:51:19,615 INFO L226 Difference]: Without dead ends: 3021 [2025-03-08 06:51:19,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:19,618 INFO L435 NwaCegarLoop]: 4306 mSDtfsCounter, 4421 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 17206 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:19,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4433 Valid, 17206 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2025-03-08 06:51:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2966. [2025-03-08 06:51:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2856 states have (on average 1.7811624649859943) internal successors, (5087), 2865 states have internal predecessors, (5087), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2025-03-08 06:51:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 5245 transitions. [2025-03-08 06:51:19,696 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 5245 transitions. Word has length 89 [2025-03-08 06:51:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:19,696 INFO L471 AbstractCegarLoop]: Abstraction has 2966 states and 5245 transitions. [2025-03-08 06:51:19,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 5245 transitions. [2025-03-08 06:51:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:19,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:19,698 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] [2025-03-08 06:51:19,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:51:19,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:19,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 766444284, now seen corresponding path program 1 times [2025-03-08 06:51:19,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:19,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133767656] [2025-03-08 06:51:19,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:19,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:19,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:19,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:19,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:19,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:19,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133767656] [2025-03-08 06:51:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133767656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:19,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863401683] [2025-03-08 06:51:19,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:19,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:19,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:19,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:19,826 INFO L87 Difference]: Start difference. First operand 2966 states and 5245 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:20,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:20,431 INFO L93 Difference]: Finished difference Result 4568 states and 7728 transitions. [2025-03-08 06:51:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:20,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:20,492 INFO L225 Difference]: With dead ends: 4568 [2025-03-08 06:51:20,493 INFO L226 Difference]: Without dead ends: 3735 [2025-03-08 06:51:20,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:20,500 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4416 mSDsluCounter, 12891 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4428 SdHoareTripleChecker+Valid, 17194 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:20,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4428 Valid, 17194 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:51:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2025-03-08 06:51:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3671. [2025-03-08 06:51:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3471 states have (on average 1.738692019590896) internal successors, (6035), 3494 states have internal predecessors, (6035), 124 states have call successors, (124), 55 states have call predecessors, (124), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2025-03-08 06:51:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 6345 transitions. [2025-03-08 06:51:20,649 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 6345 transitions. Word has length 89 [2025-03-08 06:51:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:20,649 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 6345 transitions. [2025-03-08 06:51:20,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 6345 transitions. [2025-03-08 06:51:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:20,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:20,651 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] [2025-03-08 06:51:20,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:51:20,652 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:20,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1720673179, now seen corresponding path program 1 times [2025-03-08 06:51:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:20,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994813483] [2025-03-08 06:51:20,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:20,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:20,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:20,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:20,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:20,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994813483] [2025-03-08 06:51:20,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994813483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:20,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:20,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:20,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001870655] [2025-03-08 06:51:20,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:20,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:20,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:20,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:20,779 INFO L87 Difference]: Start difference. First operand 3671 states and 6345 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:21,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:21,302 INFO L93 Difference]: Finished difference Result 7063 states and 11691 transitions. [2025-03-08 06:51:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:21,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:21,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:21,328 INFO L225 Difference]: With dead ends: 7063 [2025-03-08 06:51:21,329 INFO L226 Difference]: Without dead ends: 5525 [2025-03-08 06:51:21,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:21,337 INFO L435 NwaCegarLoop]: 4298 mSDtfsCounter, 4545 mSDsluCounter, 12871 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 17169 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:21,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4562 Valid, 17169 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:51:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2025-03-08 06:51:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5156. [2025-03-08 06:51:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 4766 states have (on average 1.6900965169953839) internal successors, (8055), 4835 states have internal predecessors, (8055), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-08 06:51:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 8749 transitions. [2025-03-08 06:51:21,590 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 8749 transitions. Word has length 89 [2025-03-08 06:51:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:21,591 INFO L471 AbstractCegarLoop]: Abstraction has 5156 states and 8749 transitions. [2025-03-08 06:51:21,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 8749 transitions. [2025-03-08 06:51:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:21,597 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:21,597 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] [2025-03-08 06:51:21,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:51:21,597 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:21,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1474360092, now seen corresponding path program 1 times [2025-03-08 06:51:21,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:21,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153098260] [2025-03-08 06:51:21,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:21,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:21,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:21,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:21,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:21,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153098260] [2025-03-08 06:51:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153098260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:21,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:21,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:21,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109484921] [2025-03-08 06:51:21,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:21,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:21,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:21,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:21,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:21,666 INFO L87 Difference]: Start difference. First operand 5156 states and 8749 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:21,928 INFO L93 Difference]: Finished difference Result 8594 states and 14394 transitions. [2025-03-08 06:51:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:21,964 INFO L225 Difference]: With dead ends: 8594 [2025-03-08 06:51:21,964 INFO L226 Difference]: Without dead ends: 5571 [2025-03-08 06:51:21,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:21,975 INFO L435 NwaCegarLoop]: 4142 mSDtfsCounter, 4308 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 12355 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:21,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 12355 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2025-03-08 06:51:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 5156. [2025-03-08 06:51:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 4766 states have (on average 1.6865295845572807) internal successors, (8038), 4835 states have internal predecessors, (8038), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-08 06:51:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 8732 transitions. [2025-03-08 06:51:22,228 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 8732 transitions. Word has length 89 [2025-03-08 06:51:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:22,228 INFO L471 AbstractCegarLoop]: Abstraction has 5156 states and 8732 transitions. [2025-03-08 06:51:22,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 8732 transitions. [2025-03-08 06:51:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:22,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:22,233 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] [2025-03-08 06:51:22,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:51:22,234 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:22,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -196153477, now seen corresponding path program 1 times [2025-03-08 06:51:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593580348] [2025-03-08 06:51:22,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:22,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:22,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:22,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:22,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:22,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593580348] [2025-03-08 06:51:22,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593580348] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:22,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990176960] [2025-03-08 06:51:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:22,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:22,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:22,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:22,323 INFO L87 Difference]: Start difference. First operand 5156 states and 8732 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:22,888 INFO L93 Difference]: Finished difference Result 11730 states and 19474 transitions. [2025-03-08 06:51:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:22,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:22,922 INFO L225 Difference]: With dead ends: 11730 [2025-03-08 06:51:22,923 INFO L226 Difference]: Without dead ends: 8707 [2025-03-08 06:51:22,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:22,936 INFO L435 NwaCegarLoop]: 4290 mSDtfsCounter, 4472 mSDsluCounter, 12848 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 17138 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:22,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 17138 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2025-03-08 06:51:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 8264. [2025-03-08 06:51:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 7448 states have (on average 1.6380236305048335) internal successors, (12200), 7663 states have internal predecessors, (12200), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:51:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 14030 transitions. [2025-03-08 06:51:23,465 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 14030 transitions. Word has length 89 [2025-03-08 06:51:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:23,465 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 14030 transitions. [2025-03-08 06:51:23,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 14030 transitions. [2025-03-08 06:51:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:23,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:23,477 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] [2025-03-08 06:51:23,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:51:23,477 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:23,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash -804230340, now seen corresponding path program 1 times [2025-03-08 06:51:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:23,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551727192] [2025-03-08 06:51:23,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:23,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:23,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:23,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:23,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551727192] [2025-03-08 06:51:23,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551727192] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:23,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:23,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626498153] [2025-03-08 06:51:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:23,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:23,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:23,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:23,611 INFO L87 Difference]: Start difference. First operand 8264 states and 14030 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:24,038 INFO L93 Difference]: Finished difference Result 15130 states and 25910 transitions. [2025-03-08 06:51:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:24,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:24,070 INFO L225 Difference]: With dead ends: 15130 [2025-03-08 06:51:24,071 INFO L226 Difference]: Without dead ends: 8999 [2025-03-08 06:51:24,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:24,087 INFO L435 NwaCegarLoop]: 4146 mSDtfsCounter, 4297 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 12359 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:24,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 12359 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2025-03-08 06:51:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 8264. [2025-03-08 06:51:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 7448 states have (on average 1.6335929108485499) internal successors, (12167), 7663 states have internal predecessors, (12167), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:51:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 13997 transitions. [2025-03-08 06:51:24,497 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 13997 transitions. Word has length 89 [2025-03-08 06:51:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:24,497 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 13997 transitions. [2025-03-08 06:51:24,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 13997 transitions. [2025-03-08 06:51:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:24,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:24,504 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] [2025-03-08 06:51:24,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:51:24,504 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:24,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash 977269595, now seen corresponding path program 1 times [2025-03-08 06:51:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:24,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760136821] [2025-03-08 06:51:24,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:24,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:24,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:24,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:24,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:24,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:24,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760136821] [2025-03-08 06:51:24,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760136821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:24,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:24,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:24,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290769011] [2025-03-08 06:51:24,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:24,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:24,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:24,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:24,564 INFO L87 Difference]: Start difference. First operand 8264 states and 13997 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:25,161 INFO L93 Difference]: Finished difference Result 14885 states and 25354 transitions. [2025-03-08 06:51:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:25,216 INFO L225 Difference]: With dead ends: 14885 [2025-03-08 06:51:25,217 INFO L226 Difference]: Without dead ends: 8754 [2025-03-08 06:51:25,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:25,249 INFO L435 NwaCegarLoop]: 4143 mSDtfsCounter, 4294 mSDsluCounter, 8208 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12351 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:25,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4306 Valid, 12351 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:51:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8754 states. [2025-03-08 06:51:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8754 to 8264. [2025-03-08 06:51:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 7448 states have (on average 1.6291621911922665) internal successors, (12134), 7663 states have internal predecessors, (12134), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:51:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 13964 transitions. [2025-03-08 06:51:25,648 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 13964 transitions. Word has length 89 [2025-03-08 06:51:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:25,648 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 13964 transitions. [2025-03-08 06:51:25,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 13964 transitions. [2025-03-08 06:51:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:51:25,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:25,653 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] [2025-03-08 06:51:25,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:51:25,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:25,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2013303972, now seen corresponding path program 1 times [2025-03-08 06:51:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:25,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162564605] [2025-03-08 06:51:25,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:25,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:51:25,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:51:25,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:25,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:25,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162564605] [2025-03-08 06:51:25,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162564605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:25,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:25,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:51:25,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332700862] [2025-03-08 06:51:25,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:25,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:51:25,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:25,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:51:25,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:51:25,706 INFO L87 Difference]: Start difference. First operand 8264 states and 13964 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:26,256 INFO L93 Difference]: Finished difference Result 20222 states and 33738 transitions. [2025-03-08 06:51:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:26,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2025-03-08 06:51:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:26,351 INFO L225 Difference]: With dead ends: 20222 [2025-03-08 06:51:26,351 INFO L226 Difference]: Without dead ends: 14092 [2025-03-08 06:51:26,380 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 [2025-03-08 06:51:26,381 INFO L435 NwaCegarLoop]: 4451 mSDtfsCounter, 4411 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 8833 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:26,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 8833 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14092 states. [2025-03-08 06:51:27,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14092 to 14059. [2025-03-08 06:51:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14059 states, 12435 states have (on average 1.5709690390028146) internal successors, (19535), 12895 states have internal predecessors, (19535), 802 states have call successors, (802), 397 states have call predecessors, (802), 820 states have return successors, (2817), 798 states have call predecessors, (2817), 800 states have call successors, (2817) [2025-03-08 06:51:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 23154 transitions. [2025-03-08 06:51:27,068 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 23154 transitions. Word has length 89 [2025-03-08 06:51:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:27,068 INFO L471 AbstractCegarLoop]: Abstraction has 14059 states and 23154 transitions. [2025-03-08 06:51:27,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 23154 transitions. [2025-03-08 06:51:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:51:27,090 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:27,091 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] [2025-03-08 06:51:27,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:51:27,091 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:27,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1575326560, now seen corresponding path program 1 times [2025-03-08 06:51:27,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:27,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285176489] [2025-03-08 06:51:27,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:27,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:27,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:27,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:27,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:27,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285176489] [2025-03-08 06:51:27,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285176489] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303864911] [2025-03-08 06:51:27,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:27,158 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) [2025-03-08 06:51:27,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:51:27,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:27,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:27,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:27,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:27,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:27,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 06:51:27,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:27,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303864911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:27,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:27,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:27,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315465937] [2025-03-08 06:51:27,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:27,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:27,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:27,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:27,331 INFO L87 Difference]: Start difference. First operand 14059 states and 23154 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:28,626 INFO L93 Difference]: Finished difference Result 37578 states and 61344 transitions. [2025-03-08 06:51:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:28,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:51:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:28,729 INFO L225 Difference]: With dead ends: 37578 [2025-03-08 06:51:28,729 INFO L226 Difference]: Without dead ends: 25653 [2025-03-08 06:51:28,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:28,758 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4179 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4468 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 [2025-03-08 06:51:28,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4179 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25653 states. [2025-03-08 06:51:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25653 to 25583. [2025-03-08 06:51:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25583 states, 22409 states have (on average 1.5425944932839484) internal successors, (34568), 23326 states have internal predecessors, (34568), 1532 states have call successors, (1532), 793 states have call predecessors, (1532), 1640 states have return successors, (5533), 1495 states have call predecessors, (5533), 1530 states have call successors, (5533) [2025-03-08 06:51:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25583 states to 25583 states and 41633 transitions. [2025-03-08 06:51:30,212 INFO L78 Accepts]: Start accepts. Automaton has 25583 states and 41633 transitions. Word has length 144 [2025-03-08 06:51:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:30,212 INFO L471 AbstractCegarLoop]: Abstraction has 25583 states and 41633 transitions. [2025-03-08 06:51:30,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 25583 states and 41633 transitions. [2025-03-08 06:51:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:51:30,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:30,258 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] [2025-03-08 06:51:30,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:30,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 06:51:30,460 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:30,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash -418988570, now seen corresponding path program 1 times [2025-03-08 06:51:30,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:30,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216486495] [2025-03-08 06:51:30,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:30,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:30,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:30,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:30,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:30,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216486495] [2025-03-08 06:51:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216486495] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976634430] [2025-03-08 06:51:30,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:30,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:30,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:30,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:30,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:51:30,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:30,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:30,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:30,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:30,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:30,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:51:30,713 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976634430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:30,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060997556] [2025-03-08 06:51:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:30,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:30,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:30,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:30,717 INFO L87 Difference]: Start difference. First operand 25583 states and 41633 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:32,777 INFO L93 Difference]: Finished difference Result 71820 states and 116587 transitions. [2025-03-08 06:51:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:32,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:51:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:32,969 INFO L225 Difference]: With dead ends: 71820 [2025-03-08 06:51:32,969 INFO L226 Difference]: Without dead ends: 48371 [2025-03-08 06:51:33,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:33,028 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4173 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4468 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 [2025-03-08 06:51:33,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48371 states. [2025-03-08 06:51:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48371 to 48235. [2025-03-08 06:51:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48235 states, 42027 states have (on average 1.52535274942299) internal successors, (64106), 43858 states have internal predecessors, (64106), 2926 states have call successors, (2926), 1585 states have call predecessors, (2926), 3280 states have return successors, (10899), 2823 states have call predecessors, (10899), 2924 states have call successors, (10899) [2025-03-08 06:51:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48235 states to 48235 states and 77931 transitions. [2025-03-08 06:51:35,239 INFO L78 Accepts]: Start accepts. Automaton has 48235 states and 77931 transitions. Word has length 144 [2025-03-08 06:51:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:35,241 INFO L471 AbstractCegarLoop]: Abstraction has 48235 states and 77931 transitions. [2025-03-08 06:51:35,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 48235 states and 77931 transitions. [2025-03-08 06:51:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:51:35,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:35,287 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] [2025-03-08 06:51:35,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:35,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 06:51:35,491 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:35,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2132556564, now seen corresponding path program 1 times [2025-03-08 06:51:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207812468] [2025-03-08 06:51:35,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:35,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:35,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:35,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:35,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207812468] [2025-03-08 06:51:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207812468] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881252207] [2025-03-08 06:51:35,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:35,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:35,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:35,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:35,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:51:35,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:35,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:35,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:35,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:35,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:35,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 06:51:35,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:35,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881252207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:35,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:35,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:35,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133074808] [2025-03-08 06:51:35,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:35,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:35,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:35,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:35,885 INFO L87 Difference]: Start difference. First operand 48235 states and 77931 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:39,887 INFO L93 Difference]: Finished difference Result 139500 states and 225667 transitions. [2025-03-08 06:51:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:51:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:40,254 INFO L225 Difference]: With dead ends: 139500 [2025-03-08 06:51:40,254 INFO L226 Difference]: Without dead ends: 93399 [2025-03-08 06:51:40,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:40,367 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4185 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4468 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 [2025-03-08 06:51:40,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93399 states. [2025-03-08 06:51:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93399 to 93131. [2025-03-08 06:51:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93131 states, 80859 states have (on average 1.5135235409787409) internal successors, (122382), 84518 states have internal predecessors, (122382), 5710 states have call successors, (5710), 3169 states have call predecessors, (5710), 6560 states have return successors, (21627), 5475 states have call predecessors, (21627), 5708 states have call successors, (21627) [2025-03-08 06:51:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93131 states to 93131 states and 149719 transitions. [2025-03-08 06:51:45,760 INFO L78 Accepts]: Start accepts. Automaton has 93131 states and 149719 transitions. Word has length 144 [2025-03-08 06:51:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:45,760 INFO L471 AbstractCegarLoop]: Abstraction has 93131 states and 149719 transitions. [2025-03-08 06:51:45,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 93131 states and 149719 transitions. [2025-03-08 06:51:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:51:45,832 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:45,832 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] [2025-03-08 06:51:45,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 06:51:46,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:46,033 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:46,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1669362418, now seen corresponding path program 1 times [2025-03-08 06:51:46,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:46,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938798462] [2025-03-08 06:51:46,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:46,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:46,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:46,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:46,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:46,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:46,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:46,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938798462] [2025-03-08 06:51:46,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938798462] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:46,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295446958] [2025-03-08 06:51:46,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:46,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:46,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:46,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:46,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 06:51:46,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:51:46,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:51:46,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:46,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:46,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:46,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 06:51:46,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295446958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121810640] [2025-03-08 06:51:46,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:46,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:46,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:46,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:46,260 INFO L87 Difference]: Start difference. First operand 93131 states and 149719 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:52,538 INFO L93 Difference]: Finished difference Result 273252 states and 440759 transitions. [2025-03-08 06:51:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:51:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:53,464 INFO L225 Difference]: With dead ends: 273252 [2025-03-08 06:51:53,464 INFO L226 Difference]: Without dead ends: 182255 [2025-03-08 06:51:53,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:53,662 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4167 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 4468 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 [2025-03-08 06:51:53,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182255 states.