./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash abf153d7504404447837d5448d411c139d9bf5ab64e9e6700e63ddfa19d4209f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:06:08,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:06:08,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:06:08,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:06:08,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:06:08,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:06:08,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:06:08,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:06:08,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:06:08,457 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:06:08,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:06:08,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:06:08,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:06:08,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:06:08,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:06:08,459 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:08,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:06:08,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:06:08,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:06:08,460 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 -> abf153d7504404447837d5448d411c139d9bf5ab64e9e6700e63ddfa19d4209f [2025-03-16 20:06:08,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:06:08,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:06:08,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:06:08,690 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:06:08,690 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:06:08,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c [2025-03-16 20:06:09,836 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de90af736/88ce4ca41b144da988c96ff316d1dc20/FLAGeb8d247c3 [2025-03-16 20:06:10,297 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:06:10,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c [2025-03-16 20:06:10,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de90af736/88ce4ca41b144da988c96ff316d1dc20/FLAGeb8d247c3 [2025-03-16 20:06:10,407 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de90af736/88ce4ca41b144da988c96ff316d1dc20 [2025-03-16 20:06:10,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:06:10,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:06:10,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:10,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:06:10,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:06:10,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:10" (1/1) ... [2025-03-16 20:06:10,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7fecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:10, skipping insertion in model container [2025-03-16 20:06:10,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:10" (1/1) ... [2025-03-16 20:06:10,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:06:11,648 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[375709,375722] [2025-03-16 20:06:11,674 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[383339,383352] [2025-03-16 20:06:11,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:11,808 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:06:12,287 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[375709,375722] [2025-03-16 20:06:12,294 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[383339,383352] [2025-03-16 20:06:12,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:12,349 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:06:12,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12 WrapperNode [2025-03-16 20:06:12,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:12,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:12,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:06:12,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:06:12,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:12,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:12,718 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12615 [2025-03-16 20:06:12,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:12,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:06:12,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:06:12,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:06:12,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:12,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:12,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:12,852 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:06:12,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:12,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:13,095 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:13,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:13,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:13,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:13,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:06:13,197 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:06:13,197 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:06:13,197 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:06:13,198 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (1/1) ... [2025-03-16 20:06:13,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:13,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:06:13,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:06:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:06:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:06:13,245 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:06:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:06:13,245 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:06:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:06:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:06:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:06:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:06:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:06:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:06:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:06:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:06:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:06:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:06:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:06:13,323 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:06:13,324 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:06:19,038 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:06:19,039 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:06:19,039 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:06:19,039 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:06:19,039 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:06:19,039 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:06:19,040 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:06:19,218 INFO L? ?]: Removed 1690 outVars from TransFormulas that were not future-live. [2025-03-16 20:06:19,218 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:06:19,271 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:06:19,271 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:06:19,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:19 BoogieIcfgContainer [2025-03-16 20:06:19,272 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:06:19,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:06:19,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:06:19,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:06:19,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:06:10" (1/3) ... [2025-03-16 20:06:19,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d90a10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:19, skipping insertion in model container [2025-03-16 20:06:19,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:12" (2/3) ... [2025-03-16 20:06:19,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d90a10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:19, skipping insertion in model container [2025-03-16 20:06:19,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:19" (3/3) ... [2025-03-16 20:06:19,280 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.02.cil-1.c [2025-03-16 20:06:19,290 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:06:19,291 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label48+token_ring.02.cil-1.c that has 7 procedures, 2244 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-03-16 20:06:19,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:06:19,384 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;@7ae647b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:06:19,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:06:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 2244 states, 2220 states have (on average 1.8810810810810812) internal successors, (4176), 2222 states have internal predecessors, (4176), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-16 20:06:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 20:06:19,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:19,404 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] [2025-03-16 20:06:19,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:19,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1596606647, now seen corresponding path program 1 times [2025-03-16 20:06:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090117822] [2025-03-16 20:06:19,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:19,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 20:06:19,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 20:06:19,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:19,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090117822] [2025-03-16 20:06:19,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090117822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:19,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:19,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691644130] [2025-03-16 20:06:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:19,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:19,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:19,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:19,760 INFO L87 Difference]: Start difference. First operand has 2244 states, 2220 states have (on average 1.8810810810810812) internal successors, (4176), 2222 states have internal predecessors, (4176), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:20,226 INFO L93 Difference]: Finished difference Result 4602 states and 8593 transitions. [2025-03-16 20:06:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:06:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2025-03-16 20:06:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:20,251 INFO L225 Difference]: With dead ends: 4602 [2025-03-16 20:06:20,252 INFO L226 Difference]: Without dead ends: 2358 [2025-03-16 20:06:20,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:20,263 INFO L435 NwaCegarLoop]: 4101 mSDtfsCounter, 4253 mSDsluCounter, 8258 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4263 SdHoareTripleChecker+Valid, 12359 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:20,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4263 Valid, 12359 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2025-03-16 20:06:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2349. [2025-03-16 20:06:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2307 states have (on average 1.8387516254876464) internal successors, (4242), 2310 states have internal predecessors, (4242), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2025-03-16 20:06:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 4297 transitions. [2025-03-16 20:06:20,391 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 4297 transitions. Word has length 61 [2025-03-16 20:06:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:20,391 INFO L471 AbstractCegarLoop]: Abstraction has 2349 states and 4297 transitions. [2025-03-16 20:06:20,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 4297 transitions. [2025-03-16 20:06:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 20:06:20,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:20,393 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] [2025-03-16 20:06:20,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:06:20,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:20,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1694136297, now seen corresponding path program 1 times [2025-03-16 20:06:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:20,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132243644] [2025-03-16 20:06:20,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:20,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 20:06:20,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 20:06:20,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:20,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132243644] [2025-03-16 20:06:20,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132243644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:20,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845901014] [2025-03-16 20:06:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:20,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:20,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:20,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:20,554 INFO L87 Difference]: Start difference. First operand 2349 states and 4297 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:20,742 INFO L93 Difference]: Finished difference Result 2587 states and 4657 transitions. [2025-03-16 20:06:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2025-03-16 20:06:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:20,752 INFO L225 Difference]: With dead ends: 2587 [2025-03-16 20:06:20,753 INFO L226 Difference]: Without dead ends: 2367 [2025-03-16 20:06:20,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:20,755 INFO L435 NwaCegarLoop]: 4083 mSDtfsCounter, 4171 mSDsluCounter, 8111 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 12194 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:20,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 12194 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:06:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2025-03-16 20:06:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2349. [2025-03-16 20:06:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2307 states have (on average 1.8378846987429562) internal successors, (4240), 2310 states have internal predecessors, (4240), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2025-03-16 20:06:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 4295 transitions. [2025-03-16 20:06:20,820 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 4295 transitions. Word has length 61 [2025-03-16 20:06:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:20,820 INFO L471 AbstractCegarLoop]: Abstraction has 2349 states and 4295 transitions. [2025-03-16 20:06:20,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 4295 transitions. [2025-03-16 20:06:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 20:06:20,825 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:20,825 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] [2025-03-16 20:06:20,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:06:20,825 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:20,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1701895656, now seen corresponding path program 1 times [2025-03-16 20:06:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169988589] [2025-03-16 20:06:20,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:20,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 20:06:20,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 20:06:20,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:20,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169988589] [2025-03-16 20:06:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169988589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:20,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:20,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:20,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545684078] [2025-03-16 20:06:20,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:20,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:20,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:20,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:20,943 INFO L87 Difference]: Start difference. First operand 2349 states and 4295 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:21,289 INFO L93 Difference]: Finished difference Result 2700 states and 4814 transitions. [2025-03-16 20:06:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2025-03-16 20:06:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:21,299 INFO L225 Difference]: With dead ends: 2700 [2025-03-16 20:06:21,299 INFO L226 Difference]: Without dead ends: 2480 [2025-03-16 20:06:21,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:21,301 INFO L435 NwaCegarLoop]: 4173 mSDtfsCounter, 4229 mSDsluCounter, 12482 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 16655 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:21,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 16655 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2025-03-16 20:06:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2451. [2025-03-16 20:06:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2391 states have (on average 1.824759514847344) internal successors, (4363), 2395 states have internal predecessors, (4363), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2025-03-16 20:06:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4443 transitions. [2025-03-16 20:06:21,358 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4443 transitions. Word has length 61 [2025-03-16 20:06:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:21,359 INFO L471 AbstractCegarLoop]: Abstraction has 2451 states and 4443 transitions. [2025-03-16 20:06:21,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4443 transitions. [2025-03-16 20:06:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 20:06:21,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:21,360 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] [2025-03-16 20:06:21,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:06:21,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:21,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -732314633, now seen corresponding path program 1 times [2025-03-16 20:06:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537304296] [2025-03-16 20:06:21,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:21,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 20:06:21,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 20:06:21,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:21,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537304296] [2025-03-16 20:06:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537304296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:21,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085131388] [2025-03-16 20:06:21,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:21,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:21,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:21,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:21,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:21,478 INFO L87 Difference]: Start difference. First operand 2451 states and 4443 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:21,836 INFO L93 Difference]: Finished difference Result 3045 states and 5320 transitions. [2025-03-16 20:06:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2025-03-16 20:06:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:21,847 INFO L225 Difference]: With dead ends: 3045 [2025-03-16 20:06:21,847 INFO L226 Difference]: Without dead ends: 2723 [2025-03-16 20:06:21,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:21,850 INFO L435 NwaCegarLoop]: 4167 mSDtfsCounter, 4289 mSDsluCounter, 12459 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 16626 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:21,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 16626 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:06:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2025-03-16 20:06:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2656. [2025-03-16 20:06:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2560 states have (on average 1.8015625) internal successors, (4612), 2568 states have internal predecessors, (4612), 58 states have call successors, (58), 30 states have call predecessors, (58), 36 states have return successors, (74), 61 states have call predecessors, (74), 58 states have call successors, (74) [2025-03-16 20:06:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 4744 transitions. [2025-03-16 20:06:21,923 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 4744 transitions. Word has length 61 [2025-03-16 20:06:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:21,924 INFO L471 AbstractCegarLoop]: Abstraction has 2656 states and 4744 transitions. [2025-03-16 20:06:21,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 4744 transitions. [2025-03-16 20:06:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 20:06:21,925 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:21,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:21,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:06:21,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:21,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1238624824, now seen corresponding path program 1 times [2025-03-16 20:06:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:21,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127328129] [2025-03-16 20:06:21,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:21,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 20:06:21,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 20:06:21,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:21,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127328129] [2025-03-16 20:06:22,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127328129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:22,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724257618] [2025-03-16 20:06:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:22,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:22,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:22,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:22,019 INFO L87 Difference]: Start difference. First operand 2656 states and 4744 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:22,243 INFO L93 Difference]: Finished difference Result 3216 states and 5578 transitions. [2025-03-16 20:06:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2025-03-16 20:06:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:22,254 INFO L225 Difference]: With dead ends: 3216 [2025-03-16 20:06:22,254 INFO L226 Difference]: Without dead ends: 2689 [2025-03-16 20:06:22,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:22,257 INFO L435 NwaCegarLoop]: 4071 mSDtfsCounter, 4167 mSDsluCounter, 8091 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 12162 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:22,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4177 Valid, 12162 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:06:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2025-03-16 20:06:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2656. [2025-03-16 20:06:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2560 states have (on average 1.799609375) internal successors, (4607), 2568 states have internal predecessors, (4607), 58 states have call successors, (58), 30 states have call predecessors, (58), 36 states have return successors, (74), 61 states have call predecessors, (74), 58 states have call successors, (74) [2025-03-16 20:06:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 4739 transitions. [2025-03-16 20:06:22,344 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 4739 transitions. Word has length 61 [2025-03-16 20:06:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:22,344 INFO L471 AbstractCegarLoop]: Abstraction has 2656 states and 4739 transitions. [2025-03-16 20:06:22,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 4739 transitions. [2025-03-16 20:06:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 20:06:22,345 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:22,346 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] [2025-03-16 20:06:22,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:06:22,346 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:22,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash 55277527, now seen corresponding path program 1 times [2025-03-16 20:06:22,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:22,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6669024] [2025-03-16 20:06:22,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:22,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:22,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 20:06:22,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 20:06:22,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:22,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6669024] [2025-03-16 20:06:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6669024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:22,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:22,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:06:22,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114838540] [2025-03-16 20:06:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:22,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:06:22,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:22,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:06:22,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:22,407 INFO L87 Difference]: Start difference. First operand 2656 states and 4739 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:22,597 INFO L93 Difference]: Finished difference Result 3685 states and 6279 transitions. [2025-03-16 20:06:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2025-03-16 20:06:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:22,613 INFO L225 Difference]: With dead ends: 3685 [2025-03-16 20:06:22,613 INFO L226 Difference]: Without dead ends: 3159 [2025-03-16 20:06:22,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:22,617 INFO L435 NwaCegarLoop]: 4271 mSDtfsCounter, 4250 mSDsluCounter, 4212 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 8483 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:22,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4250 Valid, 8483 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:06:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2025-03-16 20:06:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 3154. [2025-03-16 20:06:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 2968 states have (on average 1.7456199460916442) internal successors, (5181), 2987 states have internal predecessors, (5181), 112 states have call successors, (112), 60 states have call predecessors, (112), 72 states have return successors, (141), 110 states have call predecessors, (141), 112 states have call successors, (141) [2025-03-16 20:06:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5434 transitions. [2025-03-16 20:06:22,748 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5434 transitions. Word has length 61 [2025-03-16 20:06:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:22,749 INFO L471 AbstractCegarLoop]: Abstraction has 3154 states and 5434 transitions. [2025-03-16 20:06:22,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5434 transitions. [2025-03-16 20:06:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-16 20:06:22,752 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:22,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:22,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:06:22,753 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:22,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1999415783, now seen corresponding path program 1 times [2025-03-16 20:06:22,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:22,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247294282] [2025-03-16 20:06:22,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:22,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:22,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 20:06:22,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 20:06:22,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:22,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 20:06:22,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247294282] [2025-03-16 20:06:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247294282] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874520482] [2025-03-16 20:06:22,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:22,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:22,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:22,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 20:06:22,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 20:06:22,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 20:06:22,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:22,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:22,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:22,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 20:06:22,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:22,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874520482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:22,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:22,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:06:22,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696225931] [2025-03-16 20:06:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:22,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:22,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:22,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:22,959 INFO L87 Difference]: Start difference. First operand 3154 states and 5434 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:06:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:23,099 INFO L93 Difference]: Finished difference Result 5163 states and 8340 transitions. [2025-03-16 20:06:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2025-03-16 20:06:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:23,119 INFO L225 Difference]: With dead ends: 5163 [2025-03-16 20:06:23,119 INFO L226 Difference]: Without dead ends: 4139 [2025-03-16 20:06:23,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:23,125 INFO L435 NwaCegarLoop]: 4127 mSDtfsCounter, 4090 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:23,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 4276 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2025-03-16 20:06:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4127. [2025-03-16 20:06:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 3767 states have (on average 1.6782585611892753) internal successors, (6322), 3803 states have internal predecessors, (6322), 214 states have call successors, (214), 120 states have call predecessors, (214), 144 states have return successors, (269), 207 states have call predecessors, (269), 214 states have call successors, (269) [2025-03-16 20:06:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 6805 transitions. [2025-03-16 20:06:23,330 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 6805 transitions. Word has length 99 [2025-03-16 20:06:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:23,330 INFO L471 AbstractCegarLoop]: Abstraction has 4127 states and 6805 transitions. [2025-03-16 20:06:23,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:06:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 6805 transitions. [2025-03-16 20:06:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-16 20:06:23,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:23,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:23,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 20:06:23,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:23,541 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:23,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1850336953, now seen corresponding path program 1 times [2025-03-16 20:06:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:23,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957280644] [2025-03-16 20:06:23,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:23,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 20:06:23,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 20:06:23,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:23,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 20:06:23,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957280644] [2025-03-16 20:06:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957280644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643082130] [2025-03-16 20:06:23,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:23,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:23,646 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) [2025-03-16 20:06:23,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 20:06:23,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 20:06:23,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 20:06:23,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:23,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:23,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:23,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 20:06:23,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:23,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643082130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:23,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-16 20:06:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181924392] [2025-03-16 20:06:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:23,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:23,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:23,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:23,769 INFO L87 Difference]: Start difference. First operand 4127 states and 6805 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:06:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:24,006 INFO L93 Difference]: Finished difference Result 8020 states and 12395 transitions. [2025-03-16 20:06:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:24,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2025-03-16 20:06:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:24,048 INFO L225 Difference]: With dead ends: 8020 [2025-03-16 20:06:24,048 INFO L226 Difference]: Without dead ends: 6023 [2025-03-16 20:06:24,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:24,058 INFO L435 NwaCegarLoop]: 4127 mSDtfsCounter, 4095 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:24,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4276 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2025-03-16 20:06:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6001. [2025-03-16 20:06:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6001 states, 5307 states have (on average 1.6046730732994159) internal successors, (8516), 5377 states have internal predecessors, (8516), 404 states have call successors, (404), 240 states have call predecessors, (404), 288 states have return successors, (511), 387 states have call predecessors, (511), 404 states have call successors, (511) [2025-03-16 20:06:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6001 states to 6001 states and 9431 transitions. [2025-03-16 20:06:24,279 INFO L78 Accepts]: Start accepts. Automaton has 6001 states and 9431 transitions. Word has length 99 [2025-03-16 20:06:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:24,279 INFO L471 AbstractCegarLoop]: Abstraction has 6001 states and 9431 transitions. [2025-03-16 20:06:24,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:06:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 6001 states and 9431 transitions. [2025-03-16 20:06:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-16 20:06:24,284 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:24,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:24,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 20:06:24,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-16 20:06:24,485 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:24,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1299495449, now seen corresponding path program 1 times [2025-03-16 20:06:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638513754] [2025-03-16 20:06:24,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:24,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 20:06:24,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 20:06:24,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:24,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 20:06:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638513754] [2025-03-16 20:06:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638513754] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084877120] [2025-03-16 20:06:24,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:24,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:24,543 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) [2025-03-16 20:06:24,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 20:06:24,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 20:06:24,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 20:06:24,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:24,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:24,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:24,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 20:06:24,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084877120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:24,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:24,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666824358] [2025-03-16 20:06:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:24,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:24,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:24,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:24,677 INFO L87 Difference]: Start difference. First operand 6001 states and 9431 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 20:06:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:24,888 INFO L93 Difference]: Finished difference Result 13443 states and 20175 transitions. [2025-03-16 20:06:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2025-03-16 20:06:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:24,924 INFO L225 Difference]: With dead ends: 13443 [2025-03-16 20:06:24,924 INFO L226 Difference]: Without dead ends: 9573 [2025-03-16 20:06:24,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:24,938 INFO L435 NwaCegarLoop]: 4276 mSDtfsCounter, 146 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8401 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:24,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 8401 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2025-03-16 20:06:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 9573. [2025-03-16 20:06:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9573 states, 8256 states have (on average 1.537669573643411) internal successors, (12695), 8375 states have internal predecessors, (12695), 753 states have call successors, (753), 466 states have call predecessors, (753), 562 states have return successors, (1074), 739 states have call predecessors, (1074), 753 states have call successors, (1074) [2025-03-16 20:06:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 14522 transitions. [2025-03-16 20:06:25,259 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 14522 transitions. Word has length 99 [2025-03-16 20:06:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:25,260 INFO L471 AbstractCegarLoop]: Abstraction has 9573 states and 14522 transitions. [2025-03-16 20:06:25,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 20:06:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 14522 transitions. [2025-03-16 20:06:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 20:06:25,274 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:25,274 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:25,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 20:06:25,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:25,475 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:25,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1885366726, now seen corresponding path program 1 times [2025-03-16 20:06:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:25,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699359584] [2025-03-16 20:06:25,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:25,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:25,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 20:06:25,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 20:06:25,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:25,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-16 20:06:25,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699359584] [2025-03-16 20:06:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699359584] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91787796] [2025-03-16 20:06:25,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:25,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:25,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:25,538 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) [2025-03-16 20:06:25,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 20:06:25,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 20:06:25,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 20:06:25,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:25,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:25,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:25,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 20:06:25,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91787796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:25,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:25,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315571899] [2025-03-16 20:06:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:25,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:25,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:25,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:25,700 INFO L87 Difference]: Start difference. First operand 9573 states and 14522 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 20:06:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:25,984 INFO L93 Difference]: Finished difference Result 15335 states and 22904 transitions. [2025-03-16 20:06:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:25,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2025-03-16 20:06:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:26,013 INFO L225 Difference]: With dead ends: 15335 [2025-03-16 20:06:26,014 INFO L226 Difference]: Without dead ends: 9239 [2025-03-16 20:06:26,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:26,031 INFO L435 NwaCegarLoop]: 4124 mSDtfsCounter, 4068 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4068 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:26,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 4155 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2025-03-16 20:06:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7791. [2025-03-16 20:06:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 6826 states have (on average 1.5304717257544682) internal successors, (10447), 6875 states have internal predecessors, (10447), 561 states have call successors, (561), 370 states have call predecessors, (561), 402 states have return successors, (700), 549 states have call predecessors, (700), 561 states have call successors, (700) [2025-03-16 20:06:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 11708 transitions. [2025-03-16 20:06:26,279 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 11708 transitions. Word has length 144 [2025-03-16 20:06:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:26,280 INFO L471 AbstractCegarLoop]: Abstraction has 7791 states and 11708 transitions. [2025-03-16 20:06:26,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 20:06:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 11708 transitions. [2025-03-16 20:06:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 20:06:26,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:26,287 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:26,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 20:06:26,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:26,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:26,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash -169990645, now seen corresponding path program 1 times [2025-03-16 20:06:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330394046] [2025-03-16 20:06:26,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:26,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 20:06:26,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 20:06:26,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:26,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-16 20:06:26,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330394046] [2025-03-16 20:06:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330394046] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399300783] [2025-03-16 20:06:26,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:26,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:26,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:26,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:26,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 20:06:26,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 20:06:26,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 20:06:26,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:26,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:26,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:26,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 20:06:26,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:26,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399300783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:26,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:26,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795165507] [2025-03-16 20:06:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:26,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:26,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:26,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:26,739 INFO L87 Difference]: Start difference. First operand 7791 states and 11708 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 20:06:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:26,931 INFO L93 Difference]: Finished difference Result 14021 states and 20456 transitions. [2025-03-16 20:06:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2025-03-16 20:06:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:26,956 INFO L225 Difference]: With dead ends: 14021 [2025-03-16 20:06:26,956 INFO L226 Difference]: Without dead ends: 8363 [2025-03-16 20:06:26,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:26,970 INFO L435 NwaCegarLoop]: 4123 mSDtfsCounter, 4082 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4153 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:26,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4153 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2025-03-16 20:06:27,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 8363. [2025-03-16 20:06:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8363 states, 7342 states have (on average 1.4850177063470444) internal successors, (10903), 7391 states have internal predecessors, (10903), 575 states have call successors, (575), 412 states have call predecessors, (575), 444 states have return successors, (714), 563 states have call predecessors, (714), 575 states have call successors, (714) [2025-03-16 20:06:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 12192 transitions. [2025-03-16 20:06:27,259 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 12192 transitions. Word has length 144 [2025-03-16 20:06:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:27,260 INFO L471 AbstractCegarLoop]: Abstraction has 8363 states and 12192 transitions. [2025-03-16 20:06:27,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 20:06:27,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 12192 transitions. [2025-03-16 20:06:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 20:06:27,267 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:27,268 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:27,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 20:06:27,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 20:06:27,468 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:27,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash -152055034, now seen corresponding path program 1 times [2025-03-16 20:06:27,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:27,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211199047] [2025-03-16 20:06:27,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:27,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 20:06:27,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 20:06:27,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:27,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-16 20:06:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211199047] [2025-03-16 20:06:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211199047] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562906583] [2025-03-16 20:06:27,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:27,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:27,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:27,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:27,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 20:06:27,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 20:06:27,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 20:06:27,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:27,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:27,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 20:06:27,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 20:06:27,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:27,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562906583] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:27,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:27,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440876347] [2025-03-16 20:06:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:27,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:27,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:27,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:27,660 INFO L87 Difference]: Start difference. First operand 8363 states and 12192 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 20:06:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:27,867 INFO L93 Difference]: Finished difference Result 13650 states and 19126 transitions. [2025-03-16 20:06:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 144 [2025-03-16 20:06:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:27,893 INFO L225 Difference]: With dead ends: 13650 [2025-03-16 20:06:27,893 INFO L226 Difference]: Without dead ends: 8893 [2025-03-16 20:06:27,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:27,906 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4075 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:27,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4315 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2025-03-16 20:06:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 8823. [2025-03-16 20:06:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8823 states, 7774 states have (on average 1.4596089529199896) internal successors, (11347), 7823 states have internal predecessors, (11347), 575 states have call successors, (575), 440 states have call predecessors, (575), 472 states have return successors, (742), 563 states have call predecessors, (742), 575 states have call successors, (742) [2025-03-16 20:06:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8823 states to 8823 states and 12664 transitions. [2025-03-16 20:06:28,344 INFO L78 Accepts]: Start accepts. Automaton has 8823 states and 12664 transitions. Word has length 144 [2025-03-16 20:06:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:28,345 INFO L471 AbstractCegarLoop]: Abstraction has 8823 states and 12664 transitions. [2025-03-16 20:06:28,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 20:06:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8823 states and 12664 transitions. [2025-03-16 20:06:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 20:06:28,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:28,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:28,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 20:06:28,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:28,557 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:28,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:28,558 INFO L85 PathProgramCache]: Analyzing trace with hash 98458987, now seen corresponding path program 1 times [2025-03-16 20:06:28,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:28,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768725259] [2025-03-16 20:06:28,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:28,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:28,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 20:06:28,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 20:06:28,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:28,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-16 20:06:28,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:28,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768725259] [2025-03-16 20:06:28,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768725259] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:28,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819942792] [2025-03-16 20:06:28,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:28,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:28,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:28,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 20:06:28,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 20:06:28,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 20:06:28,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:28,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:28,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:28,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 20:06:28,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819942792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:28,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:28,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:28,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647132068] [2025-03-16 20:06:28,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:28,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:28,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:28,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:28,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:28,777 INFO L87 Difference]: Start difference. First operand 8823 states and 12664 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:29,257 INFO L93 Difference]: Finished difference Result 21371 states and 29278 transitions. [2025-03-16 20:06:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 145 [2025-03-16 20:06:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:29,310 INFO L225 Difference]: With dead ends: 21371 [2025-03-16 20:06:29,310 INFO L226 Difference]: Without dead ends: 14685 [2025-03-16 20:06:29,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:29,329 INFO L435 NwaCegarLoop]: 4267 mSDtfsCounter, 129 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 8386 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:29,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 8386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14685 states. [2025-03-16 20:06:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14685 to 14683. [2025-03-16 20:06:29,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14683 states, 12684 states have (on average 1.390964995269631) internal successors, (17643), 12781 states have internal predecessors, (17643), 1101 states have call successors, (1101), 832 states have call predecessors, (1101), 896 states have return successors, (1690), 1077 states have call predecessors, (1690), 1101 states have call successors, (1690) [2025-03-16 20:06:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14683 states to 14683 states and 20434 transitions. [2025-03-16 20:06:29,852 INFO L78 Accepts]: Start accepts. Automaton has 14683 states and 20434 transitions. Word has length 145 [2025-03-16 20:06:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:29,852 INFO L471 AbstractCegarLoop]: Abstraction has 14683 states and 20434 transitions. [2025-03-16 20:06:29,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 14683 states and 20434 transitions. [2025-03-16 20:06:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-16 20:06:29,866 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:29,867 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:29,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 20:06:30,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:30,068 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:30,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash -706401070, now seen corresponding path program 1 times [2025-03-16 20:06:30,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:30,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575175363] [2025-03-16 20:06:30,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:30,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:30,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:30,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:30,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-16 20:06:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575175363] [2025-03-16 20:06:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575175363] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891809962] [2025-03-16 20:06:30,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:30,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:30,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:30,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:30,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 20:06:30,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:30,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:30,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:30,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:30,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:30,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-16 20:06:30,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891809962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:30,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289931485] [2025-03-16 20:06:30,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:30,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:30,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:30,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:30,267 INFO L87 Difference]: Start difference. First operand 14683 states and 20434 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:30,640 INFO L93 Difference]: Finished difference Result 27945 states and 38385 transitions. [2025-03-16 20:06:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 146 [2025-03-16 20:06:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:30,694 INFO L225 Difference]: With dead ends: 27945 [2025-03-16 20:06:30,695 INFO L226 Difference]: Without dead ends: 15407 [2025-03-16 20:06:30,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:30,722 INFO L435 NwaCegarLoop]: 4126 mSDtfsCounter, 4085 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:30,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15407 states. [2025-03-16 20:06:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15407 to 14683. [2025-03-16 20:06:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14683 states, 12684 states have (on average 1.3622674235257017) internal successors, (17279), 12781 states have internal predecessors, (17279), 1101 states have call successors, (1101), 832 states have call predecessors, (1101), 896 states have return successors, (1606), 1077 states have call predecessors, (1606), 1101 states have call successors, (1606) [2025-03-16 20:06:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14683 states to 14683 states and 19986 transitions. [2025-03-16 20:06:31,302 INFO L78 Accepts]: Start accepts. Automaton has 14683 states and 19986 transitions. Word has length 146 [2025-03-16 20:06:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:31,303 INFO L471 AbstractCegarLoop]: Abstraction has 14683 states and 19986 transitions. [2025-03-16 20:06:31,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 14683 states and 19986 transitions. [2025-03-16 20:06:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-16 20:06:31,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:31,318 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:31,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:31,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-16 20:06:31,519 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:31,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 876862511, now seen corresponding path program 1 times [2025-03-16 20:06:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877734166] [2025-03-16 20:06:31,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:31,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:31,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:31,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:31,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-16 20:06:31,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877734166] [2025-03-16 20:06:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877734166] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246199156] [2025-03-16 20:06:31,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:31,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:31,591 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:31,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 20:06:31,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:31,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:31,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:31,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:31,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:06:31,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 20:06:31,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:31,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246199156] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:31,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:31,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:31,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126871407] [2025-03-16 20:06:31,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:31,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:31,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:31,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:31,703 INFO L87 Difference]: Start difference. First operand 14683 states and 19986 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:32,440 INFO L93 Difference]: Finished difference Result 37877 states and 50130 transitions. [2025-03-16 20:06:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 146 [2025-03-16 20:06:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:32,535 INFO L225 Difference]: With dead ends: 37877 [2025-03-16 20:06:32,535 INFO L226 Difference]: Without dead ends: 25339 [2025-03-16 20:06:32,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:32,564 INFO L435 NwaCegarLoop]: 4264 mSDtfsCounter, 136 mSDsluCounter, 4116 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 8380 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:32,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 8380 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25339 states. [2025-03-16 20:06:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25339 to 25337. [2025-03-16 20:06:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25337 states, 21566 states have (on average 1.3073819901697117) internal successors, (28195), 21759 states have internal predecessors, (28195), 2089 states have call successors, (2089), 1552 states have call predecessors, (2089), 1680 states have return successors, (3532), 2041 states have call predecessors, (3532), 2089 states have call successors, (3532) [2025-03-16 20:06:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25337 states to 25337 states and 33816 transitions. [2025-03-16 20:06:34,004 INFO L78 Accepts]: Start accepts. Automaton has 25337 states and 33816 transitions. Word has length 146 [2025-03-16 20:06:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:34,005 INFO L471 AbstractCegarLoop]: Abstraction has 25337 states and 33816 transitions. [2025-03-16 20:06:34,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:34,005 INFO L276 IsEmpty]: Start isEmpty. Operand 25337 states and 33816 transitions. [2025-03-16 20:06:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-16 20:06:34,031 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:34,032 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:34,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:34,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 20:06:34,233 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:34,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash -470301965, now seen corresponding path program 1 times [2025-03-16 20:06:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:34,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374262726] [2025-03-16 20:06:34,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:34,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:34,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:34,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:34,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-16 20:06:34,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374262726] [2025-03-16 20:06:34,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374262726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498785260] [2025-03-16 20:06:34,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:34,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:34,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:34,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:34,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 20:06:34,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:34,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:34,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:34,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:34,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 20:06:34,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 20:06:34,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:34,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498785260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:34,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478700812] [2025-03-16 20:06:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:34,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:34,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:34,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:34,461 INFO L87 Difference]: Start difference. First operand 25337 states and 33816 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 20:06:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:35,441 INFO L93 Difference]: Finished difference Result 43855 states and 57790 transitions. [2025-03-16 20:06:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2025-03-16 20:06:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:35,530 INFO L225 Difference]: With dead ends: 43855 [2025-03-16 20:06:35,530 INFO L226 Difference]: Without dead ends: 25923 [2025-03-16 20:06:35,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:35,567 INFO L435 NwaCegarLoop]: 4143 mSDtfsCounter, 4082 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:35,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4292 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25923 states. [2025-03-16 20:06:36,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25923 to 25281. [2025-03-16 20:06:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25281 states, 21510 states have (on average 1.29907019990702) internal successors, (27943), 21703 states have internal predecessors, (27943), 2089 states have call successors, (2089), 1552 states have call predecessors, (2089), 1680 states have return successors, (3532), 2041 states have call predecessors, (3532), 2089 states have call successors, (3532) [2025-03-16 20:06:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25281 states to 25281 states and 33564 transitions. [2025-03-16 20:06:36,724 INFO L78 Accepts]: Start accepts. Automaton has 25281 states and 33564 transitions. Word has length 146 [2025-03-16 20:06:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:36,725 INFO L471 AbstractCegarLoop]: Abstraction has 25281 states and 33564 transitions. [2025-03-16 20:06:36,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 20:06:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 25281 states and 33564 transitions. [2025-03-16 20:06:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-16 20:06:36,744 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:36,744 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:36,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:36,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 20:06:36,945 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:36,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2008373676, now seen corresponding path program 1 times [2025-03-16 20:06:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278805597] [2025-03-16 20:06:36,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:36,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 20:06:36,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 20:06:36,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:36,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-16 20:06:36,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:36,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278805597] [2025-03-16 20:06:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278805597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:36,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:36,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:06:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309214207] [2025-03-16 20:06:36,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:36,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:36,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:36,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:36,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:36,974 INFO L87 Difference]: Start difference. First operand 25281 states and 33564 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 20:06:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:37,611 INFO L93 Difference]: Finished difference Result 43161 states and 56329 transitions. [2025-03-16 20:06:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:37,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 146 [2025-03-16 20:06:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:37,674 INFO L225 Difference]: With dead ends: 43161 [2025-03-16 20:06:37,675 INFO L226 Difference]: Without dead ends: 20021 [2025-03-16 20:06:37,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:37,707 INFO L435 NwaCegarLoop]: 4121 mSDtfsCounter, 160 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 8078 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:37,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 8078 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20021 states. [2025-03-16 20:06:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20021 to 20021. [2025-03-16 20:06:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20021 states, 17142 states have (on average 1.3193909695484773) internal successors, (22617), 17285 states have internal predecessors, (22617), 1589 states have call successors, (1589), 1192 states have call predecessors, (1589), 1288 states have return successors, (2554), 1551 states have call predecessors, (2554), 1589 states have call successors, (2554) [2025-03-16 20:06:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20021 states to 20021 states and 26760 transitions. [2025-03-16 20:06:38,398 INFO L78 Accepts]: Start accepts. Automaton has 20021 states and 26760 transitions. Word has length 146 [2025-03-16 20:06:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:38,398 INFO L471 AbstractCegarLoop]: Abstraction has 20021 states and 26760 transitions. [2025-03-16 20:06:38,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 20:06:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 20021 states and 26760 transitions. [2025-03-16 20:06:38,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 20:06:38,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:38,410 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:38,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 20:06:38,410 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:38,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1389326070, now seen corresponding path program 1 times [2025-03-16 20:06:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053651048] [2025-03-16 20:06:38,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:38,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:06:38,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:06:38,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:38,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-16 20:06:38,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:38,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053651048] [2025-03-16 20:06:38,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053651048] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:38,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576292774] [2025-03-16 20:06:38,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:38,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:38,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:38,459 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:38,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 20:06:38,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:06:38,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:06:38,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:38,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:38,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 20:06:38,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 20:06:38,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576292774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:38,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:38,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713729446] [2025-03-16 20:06:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:38,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:38,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:38,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:38,584 INFO L87 Difference]: Start difference. First operand 20021 states and 26760 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 20:06:39,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:39,545 INFO L93 Difference]: Finished difference Result 33471 states and 43912 transitions. [2025-03-16 20:06:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 147 [2025-03-16 20:06:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:39,629 INFO L225 Difference]: With dead ends: 33471 [2025-03-16 20:06:39,629 INFO L226 Difference]: Without dead ends: 20239 [2025-03-16 20:06:39,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:39,661 INFO L435 NwaCegarLoop]: 4138 mSDtfsCounter, 4077 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:39,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20239 states. [2025-03-16 20:06:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20239 to 20021. [2025-03-16 20:06:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20021 states, 17142 states have (on average 1.313674017034185) internal successors, (22519), 17285 states have internal predecessors, (22519), 1589 states have call successors, (1589), 1192 states have call predecessors, (1589), 1288 states have return successors, (2554), 1551 states have call predecessors, (2554), 1589 states have call successors, (2554) [2025-03-16 20:06:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20021 states to 20021 states and 26662 transitions. [2025-03-16 20:06:40,801 INFO L78 Accepts]: Start accepts. Automaton has 20021 states and 26662 transitions. Word has length 147 [2025-03-16 20:06:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:40,802 INFO L471 AbstractCegarLoop]: Abstraction has 20021 states and 26662 transitions. [2025-03-16 20:06:40,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 20:06:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 20021 states and 26662 transitions. [2025-03-16 20:06:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 20:06:40,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:40,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:40,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:41,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 20:06:41,019 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:41,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1098797898, now seen corresponding path program 1 times [2025-03-16 20:06:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256997604] [2025-03-16 20:06:41,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:41,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:06:41,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:06:41,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:41,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-16 20:06:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256997604] [2025-03-16 20:06:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256997604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:41,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:41,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:06:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788246208] [2025-03-16 20:06:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:41,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:41,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:41,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:41,064 INFO L87 Difference]: Start difference. First operand 20021 states and 26662 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 20:06:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:41,678 INFO L93 Difference]: Finished difference Result 33255 states and 43391 transitions. [2025-03-16 20:06:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:41,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 147 [2025-03-16 20:06:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:41,745 INFO L225 Difference]: With dead ends: 33255 [2025-03-16 20:06:41,745 INFO L226 Difference]: Without dead ends: 15369 [2025-03-16 20:06:41,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:41,772 INFO L435 NwaCegarLoop]: 4120 mSDtfsCounter, 158 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 8077 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:41,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 8077 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15369 states. [2025-03-16 20:06:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15369 to 15369. [2025-03-16 20:06:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15369 states, 13268 states have (on average 1.3414983418751885) internal successors, (17799), 13373 states have internal predecessors, (17799), 1155 states have call successors, (1155), 872 states have call predecessors, (1155), 944 states have return successors, (1754), 1127 states have call predecessors, (1754), 1155 states have call successors, (1754) [2025-03-16 20:06:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15369 states to 15369 states and 20708 transitions. [2025-03-16 20:06:42,427 INFO L78 Accepts]: Start accepts. Automaton has 15369 states and 20708 transitions. Word has length 147 [2025-03-16 20:06:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:42,427 INFO L471 AbstractCegarLoop]: Abstraction has 15369 states and 20708 transitions. [2025-03-16 20:06:42,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 20:06:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 15369 states and 20708 transitions. [2025-03-16 20:06:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-16 20:06:42,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:42,437 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:42,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 20:06:42,438 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:42,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1749151181, now seen corresponding path program 1 times [2025-03-16 20:06:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:42,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010060317] [2025-03-16 20:06:42,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:42,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:42,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-16 20:06:42,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-16 20:06:42,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:42,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-16 20:06:42,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010060317] [2025-03-16 20:06:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010060317] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794287551] [2025-03-16 20:06:42,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:42,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:42,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 20:06:42,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-16 20:06:42,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-16 20:06:42,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:42,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:42,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 20:06:42,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-16 20:06:42,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:42,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794287551] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:42,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440378340] [2025-03-16 20:06:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:42,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:42,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:42,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:42,618 INFO L87 Difference]: Start difference. First operand 15369 states and 20708 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:43,097 INFO L93 Difference]: Finished difference Result 23827 states and 32200 transitions. [2025-03-16 20:06:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 150 [2025-03-16 20:06:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:43,156 INFO L225 Difference]: With dead ends: 23827 [2025-03-16 20:06:43,156 INFO L226 Difference]: Without dead ends: 15407 [2025-03-16 20:06:43,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:43,178 INFO L435 NwaCegarLoop]: 4251 mSDtfsCounter, 117 mSDsluCounter, 4103 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:43,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 8354 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15407 states. [2025-03-16 20:06:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15407 to 15369. [2025-03-16 20:06:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15369 states, 13268 states have (on average 1.3234097075670788) internal successors, (17559), 13373 states have internal predecessors, (17559), 1155 states have call successors, (1155), 872 states have call predecessors, (1155), 944 states have return successors, (1754), 1127 states have call predecessors, (1754), 1155 states have call successors, (1754) [2025-03-16 20:06:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15369 states to 15369 states and 20468 transitions. [2025-03-16 20:06:44,117 INFO L78 Accepts]: Start accepts. Automaton has 15369 states and 20468 transitions. Word has length 150 [2025-03-16 20:06:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:44,117 INFO L471 AbstractCegarLoop]: Abstraction has 15369 states and 20468 transitions. [2025-03-16 20:06:44,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15369 states and 20468 transitions. [2025-03-16 20:06:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:44,126 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:44,126 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:44,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-16 20:06:44,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:44,326 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:44,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash 115124394, now seen corresponding path program 1 times [2025-03-16 20:06:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465160144] [2025-03-16 20:06:44,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:44,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:44,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:44,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:44,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 20:06:44,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465160144] [2025-03-16 20:06:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465160144] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662722930] [2025-03-16 20:06:44,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:44,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:44,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:44,380 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:44,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 20:06:44,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:44,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:44,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:44,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:44,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 20:06:44,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 20:06:44,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:44,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662722930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:44,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:44,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 20:06:44,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584607916] [2025-03-16 20:06:44,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:44,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:44,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:44,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:44,520 INFO L87 Difference]: Start difference. First operand 15369 states and 20468 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:44,970 INFO L93 Difference]: Finished difference Result 24609 states and 32798 transitions. [2025-03-16 20:06:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:44,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 151 [2025-03-16 20:06:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:45,025 INFO L225 Difference]: With dead ends: 24609 [2025-03-16 20:06:45,025 INFO L226 Difference]: Without dead ends: 15411 [2025-03-16 20:06:45,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:45,048 INFO L435 NwaCegarLoop]: 4215 mSDtfsCounter, 95 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 8316 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:45,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 8316 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15411 states. [2025-03-16 20:06:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15411 to 15369. [2025-03-16 20:06:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15369 states, 13268 states have (on average 1.303512209828158) internal successors, (17295), 13373 states have internal predecessors, (17295), 1155 states have call successors, (1155), 872 states have call predecessors, (1155), 944 states have return successors, (1754), 1127 states have call predecessors, (1754), 1155 states have call successors, (1754) [2025-03-16 20:06:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15369 states to 15369 states and 20204 transitions. [2025-03-16 20:06:45,707 INFO L78 Accepts]: Start accepts. Automaton has 15369 states and 20204 transitions. Word has length 151 [2025-03-16 20:06:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:45,708 INFO L471 AbstractCegarLoop]: Abstraction has 15369 states and 20204 transitions. [2025-03-16 20:06:45,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 20:06:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 15369 states and 20204 transitions. [2025-03-16 20:06:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 20:06:45,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:45,718 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:45,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:45,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-16 20:06:45,919 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:45,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash -905176623, now seen corresponding path program 1 times [2025-03-16 20:06:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:45,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381052917] [2025-03-16 20:06:45,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:45,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:45,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:45,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:45,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:45,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-03-16 20:06:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381052917] [2025-03-16 20:06:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381052917] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090710485] [2025-03-16 20:06:45,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:45,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:45,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:45,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:45,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 20:06:46,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:46,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:46,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:46,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:46,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 20:06:46,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-16 20:06:46,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:46,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090710485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:46,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:46,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-16 20:06:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49869539] [2025-03-16 20:06:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:46,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:46,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:46,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:06:46,151 INFO L87 Difference]: Start difference. First operand 15369 states and 20204 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 20:06:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:46,890 INFO L93 Difference]: Finished difference Result 23599 states and 30599 transitions. [2025-03-16 20:06:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 152 [2025-03-16 20:06:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:46,938 INFO L225 Difference]: With dead ends: 23599 [2025-03-16 20:06:46,939 INFO L226 Difference]: Without dead ends: 14085 [2025-03-16 20:06:46,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 20:06:46,954 INFO L435 NwaCegarLoop]: 4059 mSDtfsCounter, 4122 mSDsluCounter, 8072 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 12131 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:46,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 12131 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:06:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14085 states. [2025-03-16 20:06:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14085 to 10502. [2025-03-16 20:06:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 9197 states have (on average 1.33489181254757) internal successors, (12277), 9254 states have internal predecessors, (12277), 729 states have call successors, (729), 538 states have call predecessors, (729), 574 states have return successors, (1099), 711 states have call predecessors, (1099), 729 states have call successors, (1099) [2025-03-16 20:06:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 14105 transitions. [2025-03-16 20:06:47,357 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 14105 transitions. Word has length 152 [2025-03-16 20:06:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:47,358 INFO L471 AbstractCegarLoop]: Abstraction has 10502 states and 14105 transitions. [2025-03-16 20:06:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 20:06:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 14105 transitions. [2025-03-16 20:06:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 20:06:47,363 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:47,363 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:47,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:47,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:47,564 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:47,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash -669498448, now seen corresponding path program 1 times [2025-03-16 20:06:47,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116902735] [2025-03-16 20:06:47,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:47,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:47,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:47,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:47,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-16 20:06:47,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116902735] [2025-03-16 20:06:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116902735] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968264889] [2025-03-16 20:06:47,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:47,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:47,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:47,612 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:47,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 20:06:47,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:47,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:47,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:47,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:47,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 20:06:47,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-16 20:06:47,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:47,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968264889] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:47,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:47,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-16 20:06:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60670548] [2025-03-16 20:06:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:47,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:47,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:47,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:06:47,770 INFO L87 Difference]: Start difference. First operand 10502 states and 14105 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 20:06:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:48,303 INFO L93 Difference]: Finished difference Result 18867 states and 24339 transitions. [2025-03-16 20:06:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 152 [2025-03-16 20:06:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:48,331 INFO L225 Difference]: With dead ends: 18867 [2025-03-16 20:06:48,332 INFO L226 Difference]: Without dead ends: 10502 [2025-03-16 20:06:48,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 20:06:48,341 INFO L435 NwaCegarLoop]: 4057 mSDtfsCounter, 4120 mSDsluCounter, 8069 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4129 SdHoareTripleChecker+Valid, 12126 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:48,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4129 Valid, 12126 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:06:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10502 states. [2025-03-16 20:06:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10502 to 10502. [2025-03-16 20:06:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 9197 states have (on average 1.3151027508970317) internal successors, (12095), 9254 states have internal predecessors, (12095), 729 states have call successors, (729), 538 states have call predecessors, (729), 574 states have return successors, (1099), 711 states have call predecessors, (1099), 729 states have call successors, (1099) [2025-03-16 20:06:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 13923 transitions. [2025-03-16 20:06:48,742 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 13923 transitions. Word has length 152 [2025-03-16 20:06:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:48,743 INFO L471 AbstractCegarLoop]: Abstraction has 10502 states and 13923 transitions. [2025-03-16 20:06:48,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 20:06:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 13923 transitions. [2025-03-16 20:06:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 20:06:48,747 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:48,747 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:48,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-16 20:06:48,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:48,948 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:48,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1953409615, now seen corresponding path program 1 times [2025-03-16 20:06:48,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:48,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489989651] [2025-03-16 20:06:48,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:48,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:48,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:48,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:48,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:48,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-16 20:06:48,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489989651] [2025-03-16 20:06:48,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489989651] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484021598] [2025-03-16 20:06:48,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:48,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:48,994 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:48,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 20:06:49,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:49,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:49,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:49,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:49,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 20:06:49,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-03-16 20:06:49,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484021598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:49,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:49,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 20:06:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095028232] [2025-03-16 20:06:49,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:49,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:06:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:49,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:06:49,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:49,103 INFO L87 Difference]: Start difference. First operand 10502 states and 13923 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:06:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:49,622 INFO L93 Difference]: Finished difference Result 17925 states and 23107 transitions. [2025-03-16 20:06:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 152 [2025-03-16 20:06:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:49,670 INFO L225 Difference]: With dead ends: 17925 [2025-03-16 20:06:49,670 INFO L226 Difference]: Without dead ends: 9558 [2025-03-16 20:06:49,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:49,688 INFO L435 NwaCegarLoop]: 4114 mSDtfsCounter, 0 mSDsluCounter, 8223 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12337 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:49,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12337 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9558 states. [2025-03-16 20:06:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9558 to 9558. [2025-03-16 20:06:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9558 states, 8405 states have (on average 1.3148126115407495) internal successors, (11051), 8456 states have internal predecessors, (11051), 645 states have call successors, (645), 474 states have call predecessors, (645), 506 states have return successors, (893), 629 states have call predecessors, (893), 645 states have call successors, (893) [2025-03-16 20:06:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9558 states to 9558 states and 12589 transitions. [2025-03-16 20:06:50,355 INFO L78 Accepts]: Start accepts. Automaton has 9558 states and 12589 transitions. Word has length 152 [2025-03-16 20:06:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:50,355 INFO L471 AbstractCegarLoop]: Abstraction has 9558 states and 12589 transitions. [2025-03-16 20:06:50,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:06:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 9558 states and 12589 transitions. [2025-03-16 20:06:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 20:06:50,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:50,360 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:50,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:50,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-16 20:06:50,564 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:50,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash -65685392, now seen corresponding path program 1 times [2025-03-16 20:06:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247971898] [2025-03-16 20:06:50,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:50,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:50,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:50,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:50,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:50,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-03-16 20:06:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247971898] [2025-03-16 20:06:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247971898] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412810379] [2025-03-16 20:06:50,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:50,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:50,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:50,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:50,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 20:06:50,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:50,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:50,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:50,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:50,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 20:06:50,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-16 20:06:50,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:50,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412810379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:50,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:50,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-16 20:06:50,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293334984] [2025-03-16 20:06:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:50,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:06:50,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:50,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:06:50,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:50,732 INFO L87 Difference]: Start difference. First operand 9558 states and 12589 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:06:51,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:51,200 INFO L93 Difference]: Finished difference Result 14999 states and 19073 transitions. [2025-03-16 20:06:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 152 [2025-03-16 20:06:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:51,239 INFO L225 Difference]: With dead ends: 14999 [2025-03-16 20:06:51,239 INFO L226 Difference]: Without dead ends: 7576 [2025-03-16 20:06:51,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:51,254 INFO L435 NwaCegarLoop]: 4114 mSDtfsCounter, 0 mSDsluCounter, 8223 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12337 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:51,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12337 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2025-03-16 20:06:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 7576. [2025-03-16 20:06:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7576 states, 6735 states have (on average 1.348626577579807) internal successors, (9083), 6774 states have internal predecessors, (9083), 469 states have call successors, (469), 338 states have call predecessors, (469), 370 states have return successors, (583), 465 states have call predecessors, (583), 469 states have call successors, (583) [2025-03-16 20:06:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 10135 transitions. [2025-03-16 20:06:51,641 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 10135 transitions. Word has length 152 [2025-03-16 20:06:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:51,641 INFO L471 AbstractCegarLoop]: Abstraction has 7576 states and 10135 transitions. [2025-03-16 20:06:51,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:06:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 10135 transitions. [2025-03-16 20:06:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 20:06:51,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:51,644 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 20:06:51,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-16 20:06:51,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:51,846 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:51,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 716031346, now seen corresponding path program 1 times [2025-03-16 20:06:51,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:51,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408167715] [2025-03-16 20:06:51,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:51,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:51,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:51,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:51,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-16 20:06:51,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:51,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408167715] [2025-03-16 20:06:51,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408167715] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:06:51,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833949654] [2025-03-16 20:06:51,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:51,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:51,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:51,883 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:06:51,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 20:06:51,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 20:06:51,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 20:06:51,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:51,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:51,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 20:06:51,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:06:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 20:06:51,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:06:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833949654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:51,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:06:51,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-16 20:06:51,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74015718] [2025-03-16 20:06:51,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:51,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:06:51,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:51,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:06:51,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:51,986 INFO L87 Difference]: Start difference. First operand 7576 states and 10135 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:06:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:52,148 INFO L93 Difference]: Finished difference Result 10207 states and 13143 transitions. [2025-03-16 20:06:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:52,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 152 [2025-03-16 20:06:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:52,174 INFO L225 Difference]: With dead ends: 10207 [2025-03-16 20:06:52,174 INFO L226 Difference]: Without dead ends: 3789 [2025-03-16 20:06:52,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:06:52,183 INFO L435 NwaCegarLoop]: 4114 mSDtfsCounter, 0 mSDsluCounter, 8223 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12337 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:52,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12337 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2025-03-16 20:06:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3789. [2025-03-16 20:06:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 3523 states have (on average 1.5526539880783423) internal successors, (5470), 3535 states have internal predecessors, (5470), 151 states have call successors, (151), 105 states have call predecessors, (151), 113 states have return successors, (159), 149 states have call predecessors, (159), 151 states have call successors, (159) [2025-03-16 20:06:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5780 transitions. [2025-03-16 20:06:52,291 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5780 transitions. Word has length 152 [2025-03-16 20:06:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:52,291 INFO L471 AbstractCegarLoop]: Abstraction has 3789 states and 5780 transitions. [2025-03-16 20:06:52,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:06:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5780 transitions. [2025-03-16 20:06:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2025-03-16 20:06:52,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:52,293 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:52,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-16 20:06:52,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:06:52,494 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:52,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:52,494 INFO L85 PathProgramCache]: Analyzing trace with hash 333725736, now seen corresponding path program 1 times [2025-03-16 20:06:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167290412] [2025-03-16 20:06:52,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:52,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-03-16 20:06:52,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-03-16 20:06:52,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:52,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-03-16 20:06:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167290412] [2025-03-16 20:06:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167290412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:52,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391116590] [2025-03-16 20:06:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:52,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:52,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:52,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:52,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:52,615 INFO L87 Difference]: Start difference. First operand 3789 states and 5780 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-03-16 20:06:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:52,845 INFO L93 Difference]: Finished difference Result 3789 states and 5780 transitions. [2025-03-16 20:06:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 20:06:52,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 185 [2025-03-16 20:06:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:52,867 INFO L225 Difference]: With dead ends: 3789 [2025-03-16 20:06:52,867 INFO L226 Difference]: Without dead ends: 2122 [2025-03-16 20:06:52,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:52,870 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4264 mSDsluCounter, 8448 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:52,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 12743 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:06:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2025-03-16 20:06:52,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2025-03-16 20:06:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.866100895803866) internal successors, (3958), 2121 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:06:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3958 transitions. [2025-03-16 20:06:52,907 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3958 transitions. Word has length 185 [2025-03-16 20:06:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:52,907 INFO L471 AbstractCegarLoop]: Abstraction has 2122 states and 3958 transitions. [2025-03-16 20:06:52,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-03-16 20:06:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3958 transitions. [2025-03-16 20:06:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2025-03-16 20:06:52,919 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:52,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:52,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-16 20:06:52,920 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:52,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1629694730, now seen corresponding path program 1 times [2025-03-16 20:06:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384533808] [2025-03-16 20:06:52,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:53,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1641 statements into 1 equivalence classes. [2025-03-16 20:06:53,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1641 of 1641 statements. [2025-03-16 20:06:53,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:53,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384533808] [2025-03-16 20:06:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384533808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 20:06:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133442322] [2025-03-16 20:06:54,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:54,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:54,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:54,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:54,082 INFO L87 Difference]: Start difference. First operand 2122 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:06:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:58,258 INFO L93 Difference]: Finished difference Result 6027 states and 11334 transitions. [2025-03-16 20:06:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:58,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1641 [2025-03-16 20:06:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:58,278 INFO L225 Difference]: With dead ends: 6027 [2025-03-16 20:06:58,278 INFO L226 Difference]: Without dead ends: 3907 [2025-03-16 20:06:58,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:58,280 INFO L435 NwaCegarLoop]: 1701 mSDtfsCounter, 321 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 5544 mSolverCounterSat, 1409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 6953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1409 IncrementalHoareTripleChecker+Valid, 5544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:58,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 2011 Invalid, 6953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1409 Valid, 5544 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-16 20:06:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2025-03-16 20:06:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3900. [2025-03-16 20:06:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3900 states, 3899 states have (on average 1.6196460630931009) internal successors, (6315), 3899 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:06:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6315 transitions. [2025-03-16 20:06:58,319 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 6315 transitions. Word has length 1641 [2025-03-16 20:06:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:58,321 INFO L471 AbstractCegarLoop]: Abstraction has 3900 states and 6315 transitions. [2025-03-16 20:06:58,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:06:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 6315 transitions. [2025-03-16 20:06:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1647 [2025-03-16 20:06:58,333 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:58,334 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:58,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-16 20:06:58,335 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:58,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash -882407154, now seen corresponding path program 1 times [2025-03-16 20:06:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:58,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725584929] [2025-03-16 20:06:58,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:58,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1646 statements into 1 equivalence classes. [2025-03-16 20:06:58,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1646 of 1646 statements. [2025-03-16 20:06:58,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:58,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725584929] [2025-03-16 20:06:58,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725584929] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:58,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:58,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 20:06:58,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583200925] [2025-03-16 20:06:58,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:58,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:58,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:58,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:58,932 INFO L87 Difference]: Start difference. First operand 3900 states and 6315 transitions. Second operand has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:02,863 INFO L93 Difference]: Finished difference Result 11234 states and 18281 transitions. [2025-03-16 20:07:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:07:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1646 [2025-03-16 20:07:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:02,891 INFO L225 Difference]: With dead ends: 11234 [2025-03-16 20:07:02,891 INFO L226 Difference]: Without dead ends: 7336 [2025-03-16 20:07:02,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:02,895 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 2704 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4473 mSolverCounterSat, 2370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 6843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2370 IncrementalHoareTripleChecker+Valid, 4473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:02,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 1690 Invalid, 6843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2370 Valid, 4473 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-16 20:07:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2025-03-16 20:07:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 7333. [2025-03-16 20:07:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7333 states, 7332 states have (on average 1.468494271685761) internal successors, (10767), 7332 states have internal predecessors, (10767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 10767 transitions. [2025-03-16 20:07:02,951 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 10767 transitions. Word has length 1646 [2025-03-16 20:07:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:02,951 INFO L471 AbstractCegarLoop]: Abstraction has 7333 states and 10767 transitions. [2025-03-16 20:07:02,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 10767 transitions. [2025-03-16 20:07:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1649 [2025-03-16 20:07:02,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:02,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:02,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-16 20:07:02,967 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:02,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:02,968 INFO L85 PathProgramCache]: Analyzing trace with hash 459547475, now seen corresponding path program 1 times [2025-03-16 20:07:02,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:02,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152877854] [2025-03-16 20:07:02,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:02,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:03,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1648 statements into 1 equivalence classes. [2025-03-16 20:07:03,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1648 of 1648 statements. [2025-03-16 20:07:03,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:03,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:03,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:03,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152877854] [2025-03-16 20:07:03,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152877854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:03,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:07:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603146633] [2025-03-16 20:07:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:03,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:07:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:03,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:07:03,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:03,992 INFO L87 Difference]: Start difference. First operand 7333 states and 10767 transitions. Second operand has 3 states, 3 states have (on average 549.3333333333334) internal successors, (1648), 3 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:08,028 INFO L93 Difference]: Finished difference Result 18095 states and 27335 transitions. [2025-03-16 20:07:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:07:08,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 549.3333333333334) internal successors, (1648), 3 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1648 [2025-03-16 20:07:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:08,064 INFO L225 Difference]: With dead ends: 18095 [2025-03-16 20:07:08,064 INFO L226 Difference]: Without dead ends: 10764 [2025-03-16 20:07:08,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:08,074 INFO L435 NwaCegarLoop]: 3459 mSDtfsCounter, 640 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 4726 mSolverCounterSat, 2211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 6937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2211 IncrementalHoareTripleChecker+Valid, 4726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:08,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 3704 Invalid, 6937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2211 Valid, 4726 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-16 20:07:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2025-03-16 20:07:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10758. [2025-03-16 20:07:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 10757 states have (on average 1.3938830528957888) internal successors, (14994), 10757 states have internal predecessors, (14994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 14994 transitions. [2025-03-16 20:07:08,191 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 14994 transitions. Word has length 1648 [2025-03-16 20:07:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:08,193 INFO L471 AbstractCegarLoop]: Abstraction has 10758 states and 14994 transitions. [2025-03-16 20:07:08,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 549.3333333333334) internal successors, (1648), 3 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 14994 transitions. [2025-03-16 20:07:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1660 [2025-03-16 20:07:08,212 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:08,212 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:08,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-16 20:07:08,213 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:08,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash -231385897, now seen corresponding path program 1 times [2025-03-16 20:07:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:08,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521211961] [2025-03-16 20:07:08,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:08,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1659 statements into 1 equivalence classes. [2025-03-16 20:07:08,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1659 of 1659 statements. [2025-03-16 20:07:08,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:08,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:08,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:08,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521211961] [2025-03-16 20:07:08,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521211961] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:08,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:07:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722151611] [2025-03-16 20:07:08,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:08,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:07:08,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:08,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:07:08,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:08,886 INFO L87 Difference]: Start difference. First operand 10758 states and 14994 transitions. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:12,982 INFO L93 Difference]: Finished difference Result 31714 states and 44233 transitions. [2025-03-16 20:07:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:07:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1659 [2025-03-16 20:07:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:13,029 INFO L225 Difference]: With dead ends: 31714 [2025-03-16 20:07:13,029 INFO L226 Difference]: Without dead ends: 20958 [2025-03-16 20:07:13,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:13,043 INFO L435 NwaCegarLoop]: 1884 mSDtfsCounter, 2298 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 2058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 6925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2058 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:13,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2298 Valid, 2072 Invalid, 6925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2058 Valid, 4867 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-16 20:07:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20958 states. [2025-03-16 20:07:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20958 to 20957. [2025-03-16 20:07:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20957 states, 20956 states have (on average 1.2833078831838136) internal successors, (26893), 20956 states have internal predecessors, (26893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20957 states to 20957 states and 26893 transitions. [2025-03-16 20:07:13,244 INFO L78 Accepts]: Start accepts. Automaton has 20957 states and 26893 transitions. Word has length 1659 [2025-03-16 20:07:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:13,244 INFO L471 AbstractCegarLoop]: Abstraction has 20957 states and 26893 transitions. [2025-03-16 20:07:13,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 20957 states and 26893 transitions. [2025-03-16 20:07:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2025-03-16 20:07:13,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:13,271 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:13,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-16 20:07:13,271 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:13,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash 105491756, now seen corresponding path program 1 times [2025-03-16 20:07:13,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:13,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442570491] [2025-03-16 20:07:13,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:13,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1673 statements into 1 equivalence classes. [2025-03-16 20:07:13,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1673 of 1673 statements. [2025-03-16 20:07:13,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:13,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:14,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442570491] [2025-03-16 20:07:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442570491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:14,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:07:14,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702136927] [2025-03-16 20:07:14,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:14,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:07:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:14,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:07:14,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:14,122 INFO L87 Difference]: Start difference. First operand 20957 states and 26893 transitions. Second operand has 3 states, 3 states have (on average 557.6666666666666) internal successors, (1673), 3 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:18,383 INFO L93 Difference]: Finished difference Result 62307 states and 79951 transitions. [2025-03-16 20:07:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:07:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 557.6666666666666) internal successors, (1673), 3 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1673 [2025-03-16 20:07:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:18,449 INFO L225 Difference]: With dead ends: 62307 [2025-03-16 20:07:18,449 INFO L226 Difference]: Without dead ends: 41352 [2025-03-16 20:07:18,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:18,475 INFO L435 NwaCegarLoop]: 3946 mSDtfsCounter, 1799 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 5667 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 7213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 5667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:18,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 4190 Invalid, 7213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1546 Valid, 5667 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-03-16 20:07:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41352 states. [2025-03-16 20:07:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41352 to 41336. [2025-03-16 20:07:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41336 states, 41335 states have (on average 1.1721543486149752) internal successors, (48451), 41335 states have internal predecessors, (48451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41336 states to 41336 states and 48451 transitions. [2025-03-16 20:07:18,842 INFO L78 Accepts]: Start accepts. Automaton has 41336 states and 48451 transitions. Word has length 1673 [2025-03-16 20:07:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:18,843 INFO L471 AbstractCegarLoop]: Abstraction has 41336 states and 48451 transitions. [2025-03-16 20:07:18,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 557.6666666666666) internal successors, (1673), 3 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 41336 states and 48451 transitions. [2025-03-16 20:07:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1678 [2025-03-16 20:07:18,883 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:18,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:18,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 20:07:18,884 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:18,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash -722912093, now seen corresponding path program 1 times [2025-03-16 20:07:18,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:18,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47538962] [2025-03-16 20:07:18,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:18,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:18,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1677 statements into 1 equivalence classes. [2025-03-16 20:07:19,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1677 of 1677 statements. [2025-03-16 20:07:19,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:19,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:19,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47538962] [2025-03-16 20:07:19,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47538962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:19,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:19,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 20:07:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492244797] [2025-03-16 20:07:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:19,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:07:19,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:19,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:07:19,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:19,688 INFO L87 Difference]: Start difference. First operand 41336 states and 48451 transitions. Second operand has 3 states, 3 states have (on average 559.0) internal successors, (1677), 2 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:24,140 INFO L93 Difference]: Finished difference Result 103072 states and 123075 transitions. [2025-03-16 20:07:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:07:24,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 559.0) internal successors, (1677), 2 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1677 [2025-03-16 20:07:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:24,237 INFO L225 Difference]: With dead ends: 103072 [2025-03-16 20:07:24,237 INFO L226 Difference]: Without dead ends: 61738 [2025-03-16 20:07:24,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:24,283 INFO L435 NwaCegarLoop]: 1393 mSDtfsCounter, 2157 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 4976 mSolverCounterSat, 2505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 7481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2505 IncrementalHoareTripleChecker+Valid, 4976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:24,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 1533 Invalid, 7481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2505 Valid, 4976 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-16 20:07:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61738 states. [2025-03-16 20:07:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61738 to 61721. [2025-03-16 20:07:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61721 states, 61720 states have (on average 1.1741736876215165) internal successors, (72470), 61720 states have internal predecessors, (72470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61721 states to 61721 states and 72470 transitions. [2025-03-16 20:07:24,872 INFO L78 Accepts]: Start accepts. Automaton has 61721 states and 72470 transitions. Word has length 1677 [2025-03-16 20:07:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:24,873 INFO L471 AbstractCegarLoop]: Abstraction has 61721 states and 72470 transitions. [2025-03-16 20:07:24,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 559.0) internal successors, (1677), 2 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 20:07:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 61721 states and 72470 transitions. [2025-03-16 20:07:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2025-03-16 20:07:24,928 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:24,929 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:24,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-16 20:07:24,929 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:24,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -420297570, now seen corresponding path program 1 times [2025-03-16 20:07:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188797043] [2025-03-16 20:07:24,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:25,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1687 statements into 1 equivalence classes. [2025-03-16 20:07:25,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1687 of 1687 statements. [2025-03-16 20:07:25,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:25,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:25,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:25,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188797043] [2025-03-16 20:07:25,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188797043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:25,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:25,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 20:07:25,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020505370] [2025-03-16 20:07:25,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:25,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:07:25,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:25,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:07:25,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:07:25,639 INFO L87 Difference]: Start difference. First operand 61721 states and 72470 transitions. Second operand has 3 states, 3 states have (on average 562.3333333333334) internal successors, (1687), 2 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)