./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 161f5eab054e94dd2ff7a7c46df9e7154542593f1f9d4de13027218e1f7c6216 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:50:55,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:50:55,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:50:55,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:50:55,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:50:55,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:50:55,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:50:55,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:50:55,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:50:55,325 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:50:55,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:50:55,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:50:55,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:50:55,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:50:55,325 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:50:55,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:50:55,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:50:55,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:50:55,327 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:50:55,328 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:50:55,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:50:55,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:50:55,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:50:55,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:50:55,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:50:55,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:50:55,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:50:55,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:50:55,329 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 -> 161f5eab054e94dd2ff7a7c46df9e7154542593f1f9d4de13027218e1f7c6216 [2025-03-08 06:50:55,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:50:55,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:50:55,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:50:55,546 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:50:55,546 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:50:55,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c [2025-03-08 06:50:56,659 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a676c9d/c35404f4b11245219c74dd924ea1fa21/FLAG61a1ca448 [2025-03-08 06:50:57,306 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:50:57,307 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c [2025-03-08 06:50:57,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a676c9d/c35404f4b11245219c74dd924ea1fa21/FLAG61a1ca448 [2025-03-08 06:50:57,725 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a676c9d/c35404f4b11245219c74dd924ea1fa21 [2025-03-08 06:50:57,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:50:57,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:50:57,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:50:57,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:50:57,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:50:57,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:50:57" (1/1) ... [2025-03-08 06:50:57,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a876983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:57, skipping insertion in model container [2025-03-08 06:50:57,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:50:57" (1/1) ... [2025-03-08 06:50:57,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:50:59,087 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[381679,381692] [2025-03-08 06:50:59,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[383339,383352] [2025-03-08 06:50:59,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:50:59,277 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:50:59,773 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[381679,381692] [2025-03-08 06:50:59,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[383339,383352] [2025-03-08 06:50:59,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:50:59,835 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:50:59,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59 WrapperNode [2025-03-08 06:50:59,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:50:59,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:50:59,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:50:59,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:50:59,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:50:59,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,183 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12672 [2025-03-08 06:51:00,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:51:00,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:51:00,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:51:00,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:51:00,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,393 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:51:00,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,547 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:51:00,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:51:00,643 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:51:00,643 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:51:00,644 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (1/1) ... [2025-03-08 06:51:00,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:51:00,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:00,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:51:00,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:51:00,692 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:51:00,692 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:51:00,692 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:51:00,692 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:51:00,692 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:51:00,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:51:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:51:00,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:51:00,781 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:51:00,783 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:51:06,670 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:51:06,671 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:51:06,671 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:51:06,671 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:51:06,671 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:51:06,672 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:51:06,672 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:51:06,838 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2025-03-08 06:51:06,839 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:51:06,879 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:51:06,880 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:51:06,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:51:06 BoogieIcfgContainer [2025-03-08 06:51:06,880 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:51:06,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:51:06,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:51:06,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:51:06,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:50:57" (1/3) ... [2025-03-08 06:51:06,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7620af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:51:06, skipping insertion in model container [2025-03-08 06:51:06,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:59" (2/3) ... [2025-03-08 06:51:06,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7620af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:51:06, skipping insertion in model container [2025-03-08 06:51:06,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:51:06" (3/3) ... [2025-03-08 06:51:06,887 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-2.c [2025-03-08 06:51:06,898 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:51:06,901 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.03.cil-2.c that has 7 procedures, 2338 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2025-03-08 06:51:06,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:51:06,973 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;@28d2bd1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:51:06,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:51:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 2338 states, 2313 states have (on average 1.8525724167747515) internal successors, (4285), 2315 states have internal predecessors, (4285), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-08 06:51:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:06,989 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:06,989 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] [2025-03-08 06:51:06,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:06,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1895885998, now seen corresponding path program 1 times [2025-03-08 06:51:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:06,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426409775] [2025-03-08 06:51:06,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:07,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:07,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:07,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:07,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:07,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:07,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426409775] [2025-03-08 06:51:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426409775] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:07,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:07,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015366915] [2025-03-08 06:51:07,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:07,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:07,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:07,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:07,445 INFO L87 Difference]: Start difference. First operand has 2338 states, 2313 states have (on average 1.8525724167747515) internal successors, (4285), 2315 states have internal predecessors, (4285), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:07,931 INFO L93 Difference]: Finished difference Result 4819 states and 8863 transitions. [2025-03-08 06:51:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:51:07,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:07,950 INFO L225 Difference]: With dead ends: 4819 [2025-03-08 06:51:07,951 INFO L226 Difference]: Without dead ends: 2422 [2025-03-08 06:51:07,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:07,959 INFO L435 NwaCegarLoop]: 4200 mSDtfsCounter, 4409 mSDsluCounter, 8479 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:07,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 12679 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2025-03-08 06:51:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2411. [2025-03-08 06:51:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2367 states have (on average 1.830587241233629) internal successors, (4333), 2370 states have internal predecessors, (4333), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-08 06:51:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4392 transitions. [2025-03-08 06:51:08,089 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4392 transitions. Word has length 77 [2025-03-08 06:51:08,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:08,089 INFO L471 AbstractCegarLoop]: Abstraction has 2411 states and 4392 transitions. [2025-03-08 06:51:08,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4392 transitions. [2025-03-08 06:51:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:08,092 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:08,092 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] [2025-03-08 06:51:08,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:51:08,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:08,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 113173652, now seen corresponding path program 1 times [2025-03-08 06:51:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442807228] [2025-03-08 06:51:08,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:08,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:08,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:08,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:08,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442807228] [2025-03-08 06:51:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442807228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:08,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:08,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:08,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412632647] [2025-03-08 06:51:08,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:08,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:08,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:08,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:08,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:08,275 INFO L87 Difference]: Start difference. First operand 2411 states and 4392 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:08,496 INFO L93 Difference]: Finished difference Result 2714 states and 4855 transitions. [2025-03-08 06:51:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:08,506 INFO L225 Difference]: With dead ends: 2714 [2025-03-08 06:51:08,506 INFO L226 Difference]: Without dead ends: 2435 [2025-03-08 06:51:08,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:08,508 INFO L435 NwaCegarLoop]: 4119 mSDtfsCounter, 4238 mSDsluCounter, 8173 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 12292 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:08,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4249 Valid, 12292 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2025-03-08 06:51:08,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2411. [2025-03-08 06:51:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2367 states have (on average 1.8297422898183355) internal successors, (4331), 2370 states have internal predecessors, (4331), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-08 06:51:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4390 transitions. [2025-03-08 06:51:08,566 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4390 transitions. Word has length 77 [2025-03-08 06:51:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:08,567 INFO L471 AbstractCegarLoop]: Abstraction has 2411 states and 4390 transitions. [2025-03-08 06:51:08,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4390 transitions. [2025-03-08 06:51:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:08,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:08,568 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] [2025-03-08 06:51:08,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:51:08,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:08,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:08,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1694673869, now seen corresponding path program 1 times [2025-03-08 06:51:08,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:08,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070001942] [2025-03-08 06:51:08,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:08,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:08,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:08,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:08,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:08,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:08,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:08,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070001942] [2025-03-08 06:51:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070001942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:08,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:08,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461840967] [2025-03-08 06:51:08,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:08,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:08,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:08,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:08,725 INFO L87 Difference]: Start difference. First operand 2411 states and 4390 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:09,111 INFO L93 Difference]: Finished difference Result 2854 states and 5053 transitions. [2025-03-08 06:51:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:09,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:09,124 INFO L225 Difference]: With dead ends: 2854 [2025-03-08 06:51:09,124 INFO L226 Difference]: Without dead ends: 2575 [2025-03-08 06:51:09,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:09,128 INFO L435 NwaCegarLoop]: 4229 mSDtfsCounter, 4323 mSDsluCounter, 12663 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 16892 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:09,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 16892 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2025-03-08 06:51:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2540. [2025-03-08 06:51:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2477 states have (on average 1.813887767460638) internal successors, (4493), 2481 states have internal predecessors, (4493), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-03-08 06:51:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 4579 transitions. [2025-03-08 06:51:09,203 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 4579 transitions. Word has length 77 [2025-03-08 06:51:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:09,204 INFO L471 AbstractCegarLoop]: Abstraction has 2540 states and 4579 transitions. [2025-03-08 06:51:09,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 4579 transitions. [2025-03-08 06:51:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:09,207 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:09,208 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] [2025-03-08 06:51:09,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:51:09,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:09,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1593761902, now seen corresponding path program 1 times [2025-03-08 06:51:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:09,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643331502] [2025-03-08 06:51:09,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:09,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:09,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:09,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:09,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:09,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643331502] [2025-03-08 06:51:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643331502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931748955] [2025-03-08 06:51:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:09,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:09,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:09,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:09,351 INFO L87 Difference]: Start difference. First operand 2540 states and 4579 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:09,795 INFO L93 Difference]: Finished difference Result 3303 states and 5716 transitions. [2025-03-08 06:51:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:09,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:09,807 INFO L225 Difference]: With dead ends: 3303 [2025-03-08 06:51:09,807 INFO L226 Difference]: Without dead ends: 2895 [2025-03-08 06:51:09,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:09,810 INFO L435 NwaCegarLoop]: 4223 mSDtfsCounter, 4422 mSDsluCounter, 12640 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16863 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:09,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16863 Invalid, 517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2025-03-08 06:51:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2801. [2025-03-08 06:51:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2700 states have (on average 1.7866666666666666) internal successors, (4824), 2708 states have internal predecessors, (4824), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (79), 66 states have call predecessors, (79), 63 states have call successors, (79) [2025-03-08 06:51:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 4966 transitions. [2025-03-08 06:51:09,905 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 4966 transitions. Word has length 77 [2025-03-08 06:51:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:09,905 INFO L471 AbstractCegarLoop]: Abstraction has 2801 states and 4966 transitions. [2025-03-08 06:51:09,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 4966 transitions. [2025-03-08 06:51:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:09,907 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:09,907 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] [2025-03-08 06:51:09,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:51:09,908 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:09,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1313412013, now seen corresponding path program 1 times [2025-03-08 06:51:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223581910] [2025-03-08 06:51:09,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:09,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:09,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:09,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:09,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:10,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223581910] [2025-03-08 06:51:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223581910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:10,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131262954] [2025-03-08 06:51:10,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:10,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:10,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:10,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:10,024 INFO L87 Difference]: Start difference. First operand 2801 states and 4966 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:10,259 INFO L93 Difference]: Finished difference Result 3514 states and 6040 transitions. [2025-03-08 06:51:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:10,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:10,272 INFO L225 Difference]: With dead ends: 3514 [2025-03-08 06:51:10,272 INFO L226 Difference]: Without dead ends: 2845 [2025-03-08 06:51:10,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:10,277 INFO L435 NwaCegarLoop]: 4110 mSDtfsCounter, 4230 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 12264 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:10,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4241 Valid, 12264 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2025-03-08 06:51:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2801. [2025-03-08 06:51:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2700 states have (on average 1.7848148148148149) internal successors, (4819), 2708 states have internal predecessors, (4819), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (79), 66 states have call predecessors, (79), 63 states have call successors, (79) [2025-03-08 06:51:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 4961 transitions. [2025-03-08 06:51:10,381 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 4961 transitions. Word has length 77 [2025-03-08 06:51:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:10,381 INFO L471 AbstractCegarLoop]: Abstraction has 2801 states and 4961 transitions. [2025-03-08 06:51:10,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 4961 transitions. [2025-03-08 06:51:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:10,383 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:10,383 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] [2025-03-08 06:51:10,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:51:10,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:10,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:10,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1050936178, now seen corresponding path program 1 times [2025-03-08 06:51:10,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:10,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942787614] [2025-03-08 06:51:10,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:10,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:10,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:10,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:10,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942787614] [2025-03-08 06:51:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942787614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:10,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:10,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53410136] [2025-03-08 06:51:10,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:10,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:10,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:10,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:10,493 INFO L87 Difference]: Start difference. First operand 2801 states and 4961 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:10,886 INFO L93 Difference]: Finished difference Result 4090 states and 6876 transitions. [2025-03-08 06:51:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:10,904 INFO L225 Difference]: With dead ends: 4090 [2025-03-08 06:51:10,904 INFO L226 Difference]: Without dead ends: 3421 [2025-03-08 06:51:10,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:51:10,908 INFO L435 NwaCegarLoop]: 4215 mSDtfsCounter, 4349 mSDsluCounter, 12617 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 16832 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:10,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 16832 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2025-03-08 06:51:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3329. [2025-03-08 06:51:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 3148 states have (on average 1.7398348157560355) internal successors, (5477), 3170 states have internal predecessors, (5477), 105 states have call successors, (105), 54 states have call predecessors, (105), 74 states have return successors, (169), 112 states have call predecessors, (169), 105 states have call successors, (169) [2025-03-08 06:51:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 5751 transitions. [2025-03-08 06:51:11,015 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 5751 transitions. Word has length 77 [2025-03-08 06:51:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:11,015 INFO L471 AbstractCegarLoop]: Abstraction has 3329 states and 5751 transitions. [2025-03-08 06:51:11,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 5751 transitions. [2025-03-08 06:51:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:11,017 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:11,017 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] [2025-03-08 06:51:11,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:51:11,017 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:11,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1681394803, now seen corresponding path program 1 times [2025-03-08 06:51:11,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404278565] [2025-03-08 06:51:11,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:11,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:11,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:11,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:11,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:11,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404278565] [2025-03-08 06:51:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404278565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:11,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:11,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934038245] [2025-03-08 06:51:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:11,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:11,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:11,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:11,080 INFO L87 Difference]: Start difference. First operand 3329 states and 5751 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:11,286 INFO L93 Difference]: Finished difference Result 4584 states and 7640 transitions. [2025-03-08 06:51:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:11,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:11,298 INFO L225 Difference]: With dead ends: 4584 [2025-03-08 06:51:11,299 INFO L226 Difference]: Without dead ends: 3387 [2025-03-08 06:51:11,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:11,303 INFO L435 NwaCegarLoop]: 4105 mSDtfsCounter, 4226 mSDsluCounter, 8145 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 12250 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:11,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4237 Valid, 12250 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2025-03-08 06:51:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 3329. [2025-03-08 06:51:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 3148 states have (on average 1.7369758576874206) internal successors, (5468), 3170 states have internal predecessors, (5468), 105 states have call successors, (105), 54 states have call predecessors, (105), 74 states have return successors, (169), 112 states have call predecessors, (169), 105 states have call successors, (169) [2025-03-08 06:51:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 5742 transitions. [2025-03-08 06:51:11,444 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 5742 transitions. Word has length 77 [2025-03-08 06:51:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:11,444 INFO L471 AbstractCegarLoop]: Abstraction has 3329 states and 5742 transitions. [2025-03-08 06:51:11,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 5742 transitions. [2025-03-08 06:51:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 06:51:11,450 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:11,450 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] [2025-03-08 06:51:11,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:51:11,450 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:11,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1701732178, now seen corresponding path program 1 times [2025-03-08 06:51:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666110763] [2025-03-08 06:51:11,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:11,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 06:51:11,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 06:51:11,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:11,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666110763] [2025-03-08 06:51:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666110763] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:51:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775182940] [2025-03-08 06:51:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:11,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:51:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:11,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:51:11,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:51:11,500 INFO L87 Difference]: Start difference. First operand 3329 states and 5742 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-08 06:51:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:11,682 INFO L93 Difference]: Finished difference Result 5682 states and 9294 transitions. [2025-03-08 06:51:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:11,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 77 [2025-03-08 06:51:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:11,704 INFO L225 Difference]: With dead ends: 5682 [2025-03-08 06:51:11,704 INFO L226 Difference]: Without dead ends: 4486 [2025-03-08 06:51:11,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:51:11,714 INFO L435 NwaCegarLoop]: 4361 mSDtfsCounter, 4328 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4328 SdHoareTripleChecker+Valid, 8659 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:11,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4328 Valid, 8659 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2025-03-08 06:51:11,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4477. [2025-03-08 06:51:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4121 states have (on average 1.6614899296287309) internal successors, (6847), 4172 states have internal predecessors, (6847), 206 states have call successors, (206), 108 states have call predecessors, (206), 148 states have return successors, (327), 204 states have call predecessors, (327), 206 states have call successors, (327) [2025-03-08 06:51:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 7380 transitions. [2025-03-08 06:51:11,853 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 7380 transitions. Word has length 77 [2025-03-08 06:51:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:11,853 INFO L471 AbstractCegarLoop]: Abstraction has 4477 states and 7380 transitions. [2025-03-08 06:51:11,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-08 06:51:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 7380 transitions. [2025-03-08 06:51:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 06:51:11,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:11,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:11,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:51:11,860 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:11,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1331570662, now seen corresponding path program 1 times [2025-03-08 06:51:11,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:11,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170551544] [2025-03-08 06:51:11,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:11,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:11,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:11,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:11,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:11,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:11,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170551544] [2025-03-08 06:51:11,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170551544] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:11,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294254468] [2025-03-08 06:51:11,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:11,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:11,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:11,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:11,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:51:11,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:12,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:12,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:12,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:12,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:12,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:51:12,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294254468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:12,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228173046] [2025-03-08 06:51:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:12,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:12,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:12,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:12,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:12,091 INFO L87 Difference]: Start difference. First operand 4477 states and 7380 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2025-03-08 06:51:12,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:12,324 INFO L93 Difference]: Finished difference Result 9074 states and 14128 transitions. [2025-03-08 06:51:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:12,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 125 [2025-03-08 06:51:12,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:12,347 INFO L225 Difference]: With dead ends: 9074 [2025-03-08 06:51:12,347 INFO L226 Difference]: Without dead ends: 6730 [2025-03-08 06:51:12,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:12,353 INFO L435 NwaCegarLoop]: 4174 mSDtfsCounter, 4130 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:12,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4366 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2025-03-08 06:51:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 6710. [2025-03-08 06:51:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 6022 states have (on average 1.590501494520093) internal successors, (9578), 6122 states have internal predecessors, (9578), 390 states have call successors, (390), 216 states have call predecessors, (390), 296 states have return successors, (625), 379 states have call predecessors, (625), 390 states have call successors, (625) [2025-03-08 06:51:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 10593 transitions. [2025-03-08 06:51:12,571 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 10593 transitions. Word has length 125 [2025-03-08 06:51:12,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:12,572 INFO L471 AbstractCegarLoop]: Abstraction has 6710 states and 10593 transitions. [2025-03-08 06:51:12,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2025-03-08 06:51:12,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 10593 transitions. [2025-03-08 06:51:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 06:51:12,579 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:12,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:12,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:51:12,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:12,785 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:12,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2139120736, now seen corresponding path program 1 times [2025-03-08 06:51:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128358669] [2025-03-08 06:51:12,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:12,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:12,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:12,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:12,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128358669] [2025-03-08 06:51:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128358669] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043184614] [2025-03-08 06:51:12,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:12,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:12,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:12,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:12,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:51:12,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:12,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:12,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:12,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:12,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:12,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 06:51:13,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043184614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:13,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343874198] [2025-03-08 06:51:13,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:13,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:13,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:13,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:13,026 INFO L87 Difference]: Start difference. First operand 6710 states and 10593 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (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) [2025-03-08 06:51:13,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:13,341 INFO L93 Difference]: Finished difference Result 15731 states and 23779 transitions. [2025-03-08 06:51:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:13,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (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 125 [2025-03-08 06:51:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:13,375 INFO L225 Difference]: With dead ends: 15731 [2025-03-08 06:51:13,376 INFO L226 Difference]: Without dead ends: 11154 [2025-03-08 06:51:13,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:13,390 INFO L435 NwaCegarLoop]: 4174 mSDtfsCounter, 4124 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4124 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:13,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4124 Valid, 4366 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2025-03-08 06:51:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11116. [2025-03-08 06:51:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11116 states, 9766 states have (on average 1.528568502969486) internal successors, (14928), 9964 states have internal predecessors, (14928), 756 states have call successors, (756), 432 states have call predecessors, (756), 592 states have return successors, (1219), 727 states have call predecessors, (1219), 756 states have call successors, (1219) [2025-03-08 06:51:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11116 states to 11116 states and 16903 transitions. [2025-03-08 06:51:13,885 INFO L78 Accepts]: Start accepts. Automaton has 11116 states and 16903 transitions. Word has length 125 [2025-03-08 06:51:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:13,885 INFO L471 AbstractCegarLoop]: Abstraction has 11116 states and 16903 transitions. [2025-03-08 06:51:13,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (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) [2025-03-08 06:51:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11116 states and 16903 transitions. [2025-03-08 06:51:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 06:51:13,896 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:13,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:13,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:14,096 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,SelfDestructingSolverStorable9 [2025-03-08 06:51:14,096 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:14,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash -322962522, now seen corresponding path program 1 times [2025-03-08 06:51:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388290949] [2025-03-08 06:51:14,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:14,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:14,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:14,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:14,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388290949] [2025-03-08 06:51:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388290949] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398427901] [2025-03-08 06:51:14,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:14,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:14,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:14,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:14,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:51:14,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:14,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:14,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:14,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:14,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:14,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 06:51:14,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:14,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398427901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:14,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:14,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633474226] [2025-03-08 06:51:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:14,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:14,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:14,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:14,335 INFO L87 Difference]: Start difference. First operand 11116 states and 16903 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2025-03-08 06:51:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:14,999 INFO L93 Difference]: Finished difference Result 28817 states and 42651 transitions. [2025-03-08 06:51:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 125 [2025-03-08 06:51:15,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:15,068 INFO L225 Difference]: With dead ends: 28817 [2025-03-08 06:51:15,068 INFO L226 Difference]: Without dead ends: 19834 [2025-03-08 06:51:15,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:15,098 INFO L435 NwaCegarLoop]: 4174 mSDtfsCounter, 4136 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:15,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4366 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19834 states. [2025-03-08 06:51:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19834 to 19760. [2025-03-08 06:51:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19760 states, 17106 states have (on average 1.4832222611949024) internal successors, (25372), 17500 states have internal predecessors, (25372), 1468 states have call successors, (1468), 864 states have call predecessors, (1468), 1184 states have return successors, (2387), 1403 states have call predecessors, (2387), 1468 states have call successors, (2387) [2025-03-08 06:51:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 29227 transitions. [2025-03-08 06:51:15,846 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 29227 transitions. Word has length 125 [2025-03-08 06:51:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:15,847 INFO L471 AbstractCegarLoop]: Abstraction has 19760 states and 29227 transitions. [2025-03-08 06:51:15,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2025-03-08 06:51:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 29227 transitions. [2025-03-08 06:51:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 06:51:15,862 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:15,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:15,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:16,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:16,067 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:16,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1300069716, now seen corresponding path program 1 times [2025-03-08 06:51:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668741231] [2025-03-08 06:51:16,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:16,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:16,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:16,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:16,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:16,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668741231] [2025-03-08 06:51:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668741231] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482353929] [2025-03-08 06:51:16,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:16,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:16,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:16,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 06:51:16,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 06:51:16,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 06:51:16,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:16,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:16,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:16,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 06:51:16,252 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482353929] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:16,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:16,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765934748] [2025-03-08 06:51:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:16,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:16,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:16,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:16,254 INFO L87 Difference]: Start difference. First operand 19760 states and 29227 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-03-08 06:51:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:17,538 INFO L93 Difference]: Finished difference Result 53967 states and 79169 transitions. [2025-03-08 06:51:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:17,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 125 [2025-03-08 06:51:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:17,695 INFO L225 Difference]: With dead ends: 53967 [2025-03-08 06:51:17,696 INFO L226 Difference]: Without dead ends: 36341 [2025-03-08 06:51:17,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:17,749 INFO L435 NwaCegarLoop]: 4368 mSDtfsCounter, 190 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 8541 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 [2025-03-08 06:51:17,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 8541 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36341 states. [2025-03-08 06:51:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36341 to 36341. [2025-03-08 06:51:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36341 states, 31256 states have (on average 1.4539608395188124) internal successors, (45445), 31971 states have internal predecessors, (45445), 2753 states have call successors, (2753), 1690 states have call predecessors, (2753), 2330 states have return successors, (5010), 2695 states have call predecessors, (5010), 2753 states have call successors, (5010) [2025-03-08 06:51:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36341 states to 36341 states and 53208 transitions. [2025-03-08 06:51:19,418 INFO L78 Accepts]: Start accepts. Automaton has 36341 states and 53208 transitions. Word has length 125 [2025-03-08 06:51:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:19,419 INFO L471 AbstractCegarLoop]: Abstraction has 36341 states and 53208 transitions. [2025-03-08 06:51:19,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-03-08 06:51:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 36341 states and 53208 transitions. [2025-03-08 06:51:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 06:51:19,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:19,499 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, 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] [2025-03-08 06:51:19,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:19,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:19,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1006525213, now seen corresponding path program 1 times [2025-03-08 06:51:19,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:19,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149917076] [2025-03-08 06:51:19,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:19,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 06:51:19,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 06:51:19,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:19,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-08 06:51:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149917076] [2025-03-08 06:51:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149917076] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987173644] [2025-03-08 06:51:19,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:19,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:19,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:19,793 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) [2025-03-08 06:51:19,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 06:51:19,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 06:51:19,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 06:51:19,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:19,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:19,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:19,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-08 06:51:19,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987173644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:19,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:19,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:19,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436806560] [2025-03-08 06:51:19,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:19,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:19,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:19,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:19,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:19,984 INFO L87 Difference]: Start difference. First operand 36341 states and 53208 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2025-03-08 06:51:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:21,044 INFO L93 Difference]: Finished difference Result 59681 states and 87291 transitions. [2025-03-08 06:51:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:21,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 180 [2025-03-08 06:51:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:21,174 INFO L225 Difference]: With dead ends: 59681 [2025-03-08 06:51:21,175 INFO L226 Difference]: Without dead ends: 32453 [2025-03-08 06:51:21,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:21,236 INFO L435 NwaCegarLoop]: 4171 mSDtfsCounter, 4104 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4215 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 [2025-03-08 06:51:21,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 4215 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32453 states. [2025-03-08 06:51:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32453 to 25049. [2025-03-08 06:51:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25049 states, 21860 states have (on average 1.4274931381518756) internal successors, (31205), 22099 states have internal predecessors, (31205), 1809 states have call successors, (1809), 1186 states have call predecessors, (1809), 1378 states have return successors, (2546), 1771 states have call predecessors, (2546), 1809 states have call successors, (2546) [2025-03-08 06:51:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25049 states to 25049 states and 35560 transitions. [2025-03-08 06:51:22,651 INFO L78 Accepts]: Start accepts. Automaton has 25049 states and 35560 transitions. Word has length 180 [2025-03-08 06:51:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:22,652 INFO L471 AbstractCegarLoop]: Abstraction has 25049 states and 35560 transitions. [2025-03-08 06:51:22,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2025-03-08 06:51:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 25049 states and 35560 transitions. [2025-03-08 06:51:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 06:51:22,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:22,688 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, 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] [2025-03-08 06:51:22,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:22,888 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,SelfDestructingSolverStorable12 [2025-03-08 06:51:22,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:22,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:22,890 INFO L85 PathProgramCache]: Analyzing trace with hash 519408482, now seen corresponding path program 1 times [2025-03-08 06:51:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:22,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786057045] [2025-03-08 06:51:22,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:22,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 06:51:22,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 06:51:22,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:22,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-08 06:51:23,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:23,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786057045] [2025-03-08 06:51:23,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786057045] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:23,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259733455] [2025-03-08 06:51:23,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:23,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:23,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:23,003 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) [2025-03-08 06:51:23,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 06:51:23,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 06:51:23,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 06:51:23,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:23,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:23,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:23,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 06:51:23,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259733455] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774107853] [2025-03-08 06:51:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:23,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:23,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:23,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:23,206 INFO L87 Difference]: Start difference. First operand 25049 states and 35560 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2025-03-08 06:51:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:24,620 INFO L93 Difference]: Finished difference Result 50635 states and 71545 transitions. [2025-03-08 06:51:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:24,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 180 [2025-03-08 06:51:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:24,735 INFO L225 Difference]: With dead ends: 50635 [2025-03-08 06:51:24,736 INFO L226 Difference]: Without dead ends: 27727 [2025-03-08 06:51:24,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:24,795 INFO L435 NwaCegarLoop]: 4169 mSDtfsCounter, 4121 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4121 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:24,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4121 Valid, 4212 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27727 states. [2025-03-08 06:51:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27727 to 27727. [2025-03-08 06:51:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27727 states, 24334 states have (on average 1.388304430015616) internal successors, (33783), 24573 states have internal predecessors, (33783), 1867 states have call successors, (1867), 1332 states have call predecessors, (1867), 1524 states have return successors, (2618), 1829 states have call predecessors, (2618), 1867 states have call successors, (2618) [2025-03-08 06:51:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 38268 transitions. [2025-03-08 06:51:26,177 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 38268 transitions. Word has length 180 [2025-03-08 06:51:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:26,178 INFO L471 AbstractCegarLoop]: Abstraction has 27727 states and 38268 transitions. [2025-03-08 06:51:26,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2025-03-08 06:51:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 38268 transitions. [2025-03-08 06:51:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 06:51:26,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:26,207 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, 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, 1, 1, 1, 1, 1] [2025-03-08 06:51:26,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:26,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:26,407 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:26,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash -360586647, now seen corresponding path program 1 times [2025-03-08 06:51:26,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:26,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039994807] [2025-03-08 06:51:26,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:26,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:26,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 06:51:26,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 06:51:26,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:26,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-08 06:51:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039994807] [2025-03-08 06:51:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039994807] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66735132] [2025-03-08 06:51:26,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:26,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:26,486 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) [2025-03-08 06:51:26,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 06:51:26,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 06:51:26,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 06:51:26,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:26,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:26,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:51:26,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-08 06:51:26,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:26,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66735132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:26,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:26,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:26,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847289360] [2025-03-08 06:51:26,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:26,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:26,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:26,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:26,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:26,635 INFO L87 Difference]: Start difference. First operand 27727 states and 38268 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2025-03-08 06:51:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:27,703 INFO L93 Difference]: Finished difference Result 49614 states and 67290 transitions. [2025-03-08 06:51:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 180 [2025-03-08 06:51:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:27,956 INFO L225 Difference]: With dead ends: 49614 [2025-03-08 06:51:27,956 INFO L226 Difference]: Without dead ends: 30171 [2025-03-08 06:51:28,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:28,048 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4111 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4111 SdHoareTripleChecker+Valid, 4425 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 [2025-03-08 06:51:28,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4111 Valid, 4425 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30171 states. [2025-03-08 06:51:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30171 to 30007. [2025-03-08 06:51:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30007 states, 26470 states have (on average 1.3618058179070647) internal successors, (36047), 26709 states have internal predecessors, (36047), 1895 states have call successors, (1895), 1448 states have call predecessors, (1895), 1640 states have return successors, (2762), 1857 states have call predecessors, (2762), 1895 states have call successors, (2762) [2025-03-08 06:51:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30007 states to 30007 states and 40704 transitions. [2025-03-08 06:51:29,415 INFO L78 Accepts]: Start accepts. Automaton has 30007 states and 40704 transitions. Word has length 180 [2025-03-08 06:51:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:29,415 INFO L471 AbstractCegarLoop]: Abstraction has 30007 states and 40704 transitions. [2025-03-08 06:51:29,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2025-03-08 06:51:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 30007 states and 40704 transitions. [2025-03-08 06:51:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-08 06:51:29,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:29,445 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, 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, 1, 1, 1, 1, 1] [2025-03-08 06:51:29,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 06:51:29,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:29,646 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:29,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:29,647 INFO L85 PathProgramCache]: Analyzing trace with hash -919246193, now seen corresponding path program 1 times [2025-03-08 06:51:29,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:29,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344919899] [2025-03-08 06:51:29,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:29,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 06:51:29,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 06:51:29,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:29,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-08 06:51:29,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:29,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344919899] [2025-03-08 06:51:29,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344919899] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:29,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534531068] [2025-03-08 06:51:29,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:29,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:29,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:29,724 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) [2025-03-08 06:51:29,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 06:51:29,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 06:51:29,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 06:51:29,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:29,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:29,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:29,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 06:51:29,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534531068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316100512] [2025-03-08 06:51:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:29,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:29,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:29,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:29,855 INFO L87 Difference]: Start difference. First operand 30007 states and 40704 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2025-03-08 06:51:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:31,633 INFO L93 Difference]: Finished difference Result 82235 states and 110830 transitions. [2025-03-08 06:51:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:31,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 181 [2025-03-08 06:51:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:31,842 INFO L225 Difference]: With dead ends: 82235 [2025-03-08 06:51:31,842 INFO L226 Difference]: Without dead ends: 54369 [2025-03-08 06:51:31,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:31,907 INFO L435 NwaCegarLoop]: 4359 mSDtfsCounter, 172 mSDsluCounter, 4167 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 8526 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 [2025-03-08 06:51:31,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 8526 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54369 states. [2025-03-08 06:51:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54369 to 54367. [2025-03-08 06:51:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54367 states, 47616 states have (on average 1.3366305443548387) internal successors, (63645), 48093 states have internal predecessors, (63645), 3629 states have call successors, (3629), 2736 states have call predecessors, (3629), 3120 states have return successors, (6322), 3553 states have call predecessors, (6322), 3629 states have call successors, (6322) [2025-03-08 06:51:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54367 states to 54367 states and 73596 transitions. [2025-03-08 06:51:33,985 INFO L78 Accepts]: Start accepts. Automaton has 54367 states and 73596 transitions. Word has length 181 [2025-03-08 06:51:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:33,985 INFO L471 AbstractCegarLoop]: Abstraction has 54367 states and 73596 transitions. [2025-03-08 06:51:33,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2025-03-08 06:51:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 54367 states and 73596 transitions. [2025-03-08 06:51:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-08 06:51:34,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:34,048 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, 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] [2025-03-08 06:51:34,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:34,249 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,SelfDestructingSolverStorable15 [2025-03-08 06:51:34,249 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:34,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1744285188, now seen corresponding path program 1 times [2025-03-08 06:51:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582239634] [2025-03-08 06:51:34,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:34,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:34,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:34,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:34,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-08 06:51:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582239634] [2025-03-08 06:51:34,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582239634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804811074] [2025-03-08 06:51:34,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:34,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:34,315 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) [2025-03-08 06:51:34,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 06:51:34,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:34,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:34,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:34,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:34,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:34,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 06:51:34,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:34,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804811074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:34,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:34,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838015153] [2025-03-08 06:51:34,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:34,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:34,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:34,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:34,461 INFO L87 Difference]: Start difference. First operand 54367 states and 73596 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2025-03-08 06:51:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:36,576 INFO L93 Difference]: Finished difference Result 110473 states and 150473 transitions. [2025-03-08 06:51:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 182 [2025-03-08 06:51:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:36,770 INFO L225 Difference]: With dead ends: 110473 [2025-03-08 06:51:36,770 INFO L226 Difference]: Without dead ends: 58255 [2025-03-08 06:51:36,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:36,858 INFO L435 NwaCegarLoop]: 4177 mSDtfsCounter, 4131 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 4219 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 [2025-03-08 06:51:36,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 4219 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58255 states. [2025-03-08 06:51:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58255 to 54367. [2025-03-08 06:51:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54367 states, 47616 states have (on average 1.3161332325268817) internal successors, (62669), 48093 states have internal predecessors, (62669), 3629 states have call successors, (3629), 2736 states have call predecessors, (3629), 3120 states have return successors, (5974), 3553 states have call predecessors, (5974), 3629 states have call successors, (5974) [2025-03-08 06:51:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54367 states to 54367 states and 72272 transitions. [2025-03-08 06:51:39,131 INFO L78 Accepts]: Start accepts. Automaton has 54367 states and 72272 transitions. Word has length 182 [2025-03-08 06:51:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:39,132 INFO L471 AbstractCegarLoop]: Abstraction has 54367 states and 72272 transitions. [2025-03-08 06:51:39,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2025-03-08 06:51:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 54367 states and 72272 transitions. [2025-03-08 06:51:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-08 06:51:39,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:39,184 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, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:39,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 06:51:39,385 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,SelfDestructingSolverStorable16 [2025-03-08 06:51:39,385 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:39,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash -513952832, now seen corresponding path program 1 times [2025-03-08 06:51:39,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:39,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700704593] [2025-03-08 06:51:39,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:39,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:39,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:39,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:39,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:39,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-08 06:51:39,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:39,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700704593] [2025-03-08 06:51:39,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700704593] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:39,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072221695] [2025-03-08 06:51:39,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:39,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:39,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:39,570 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) [2025-03-08 06:51:39,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 06:51:39,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:39,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:39,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:39,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:39,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:39,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 06:51:39,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072221695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:39,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833517763] [2025-03-08 06:51:39,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:39,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:39,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:39,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:39,682 INFO L87 Difference]: Start difference. First operand 54367 states and 72272 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2025-03-08 06:51:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:43,131 INFO L93 Difference]: Finished difference Result 156567 states and 208328 transitions. [2025-03-08 06:51:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 182 [2025-03-08 06:51:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:43,510 INFO L225 Difference]: With dead ends: 156567 [2025-03-08 06:51:43,510 INFO L226 Difference]: Without dead ends: 104349 [2025-03-08 06:51:43,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:43,606 INFO L435 NwaCegarLoop]: 4356 mSDtfsCounter, 182 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 8519 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 [2025-03-08 06:51:43,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 8519 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104349 states. [2025-03-08 06:51:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104349 to 104347. [2025-03-08 06:51:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104347 states, 91184 states have (on average 1.2945363221617827) internal successors, (118041), 92137 states have internal predecessors, (118041), 7033 states have call successors, (7033), 5360 states have call predecessors, (7033), 6128 states have return successors, (13948), 6881 states have call predecessors, (13948), 7033 states have call successors, (13948) [2025-03-08 06:51:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104347 states to 104347 states and 139022 transitions. [2025-03-08 06:51:48,751 INFO L78 Accepts]: Start accepts. Automaton has 104347 states and 139022 transitions. Word has length 182 [2025-03-08 06:51:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:48,751 INFO L471 AbstractCegarLoop]: Abstraction has 104347 states and 139022 transitions. [2025-03-08 06:51:48,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2025-03-08 06:51:48,751 INFO L276 IsEmpty]: Start isEmpty. Operand 104347 states and 139022 transitions. [2025-03-08 06:51:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-08 06:51:49,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:49,197 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, 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] [2025-03-08 06:51:49,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:49,398 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,SelfDestructingSolverStorable17 [2025-03-08 06:51:49,398 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:49,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 50948808, now seen corresponding path program 1 times [2025-03-08 06:51:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:49,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309023693] [2025-03-08 06:51:49,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:49,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:49,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:49,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:49,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-08 06:51:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309023693] [2025-03-08 06:51:49,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309023693] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644336403] [2025-03-08 06:51:49,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:49,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:49,551 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) [2025-03-08 06:51:49,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 06:51:49,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:49,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:49,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:49,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:49,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:49,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-08 06:51:49,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644336403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:49,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:49,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:49,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091102273] [2025-03-08 06:51:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:49,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:49,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:49,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:49,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:49,734 INFO L87 Difference]: Start difference. First operand 104347 states and 139022 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2025-03-08 06:51:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:53,625 INFO L93 Difference]: Finished difference Result 180477 states and 245389 transitions. [2025-03-08 06:51:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:53,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 182 [2025-03-08 06:51:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:53,910 INFO L225 Difference]: With dead ends: 180477 [2025-03-08 06:51:53,910 INFO L226 Difference]: Without dead ends: 93659 [2025-03-08 06:51:54,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:54,025 INFO L435 NwaCegarLoop]: 4164 mSDtfsCounter, 4095 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4205 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 [2025-03-08 06:51:54,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4205 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93659 states. [2025-03-08 06:51:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93659 to 75387. [2025-03-08 06:51:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75387 states, 66400 states have (on average 1.2748343373493976) internal successors, (84649), 66785 states have internal predecessors, (84649), 4921 states have call successors, (4921), 3808 states have call predecessors, (4921), 4064 states have return successors, (9076), 4809 states have call predecessors, (9076), 4921 states have call successors, (9076) [2025-03-08 06:51:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75387 states to 75387 states and 98646 transitions. [2025-03-08 06:51:57,544 INFO L78 Accepts]: Start accepts. Automaton has 75387 states and 98646 transitions. Word has length 182 [2025-03-08 06:51:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:57,544 INFO L471 AbstractCegarLoop]: Abstraction has 75387 states and 98646 transitions. [2025-03-08 06:51:57,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2025-03-08 06:51:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 75387 states and 98646 transitions. [2025-03-08 06:51:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-08 06:51:57,592 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:57,592 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, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:57,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-08 06:51:57,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:57,793 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:57,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1622346308, now seen corresponding path program 1 times [2025-03-08 06:51:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:57,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219023092] [2025-03-08 06:51:57,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:57,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:57,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:57,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:57,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-08 06:51:57,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219023092] [2025-03-08 06:51:57,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219023092] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370866164] [2025-03-08 06:51:57,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:57,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:57,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:57,843 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) [2025-03-08 06:51:57,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 06:51:57,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-08 06:51:57,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-08 06:51:57,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:57,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:57,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:57,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 06:51:58,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370866164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008174070] [2025-03-08 06:51:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:58,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:58,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:58,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:58,163 INFO L87 Difference]: Start difference. First operand 75387 states and 98646 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2025-03-08 06:52:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:52:02,316 INFO L93 Difference]: Finished difference Result 211435 states and 278478 transitions. [2025-03-08 06:52:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:52:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 182 [2025-03-08 06:52:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:52:02,709 INFO L225 Difference]: With dead ends: 211435 [2025-03-08 06:52:02,710 INFO L226 Difference]: Without dead ends: 138217 [2025-03-08 06:52:02,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:52:02,807 INFO L435 NwaCegarLoop]: 4351 mSDtfsCounter, 169 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 8512 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 [2025-03-08 06:52:02,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 8512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:52:02,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138217 states.