./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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_label49+token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:48:09,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:48:09,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:48:09,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:48:09,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:48:09,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:48:09,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:48:09,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:48:09,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:48:09,907 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:48:09,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:48:09,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:48:09,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:48:09,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:48:09,907 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:48:09,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:48:09,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:48:09,907 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:48:09,908 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:48:09,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:48:09,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:48:09,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:48:09,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:48:09,910 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 -> 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 [2025-03-03 15:48:10,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:48:10,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:48:10,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:48:10,121 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:48:10,121 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:48:10,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2025-03-03 15:48:11,240 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb77d4984/b2e8050d2aa245a89cffc79f674ae3ea/FLAGd55910443 [2025-03-03 15:48:11,818 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:48:11,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2025-03-03 15:48:11,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb77d4984/b2e8050d2aa245a89cffc79f674ae3ea/FLAGd55910443 [2025-03-03 15:48:12,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb77d4984/b2e8050d2aa245a89cffc79f674ae3ea [2025-03-03 15:48:12,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:48:12,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:48:12,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:48:12,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:48:12,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:48:12,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:48:12" (1/1) ... [2025-03-03 15:48:12,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8d9517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:12, skipping insertion in model container [2025-03-03 15:48:12,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:48:12" (1/1) ... [2025-03-03 15:48:12,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:48:13,464 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_label49+token_ring.04.cil-2.c[380593,380606] [2025-03-03 15:48:13,496 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[383339,383352] [2025-03-03 15:48:13,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:48:13,679 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:48:14,167 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_label49+token_ring.04.cil-2.c[380593,380606] [2025-03-03 15:48:14,172 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_label49+token_ring.04.cil-2.c[383339,383352] [2025-03-03 15:48:14,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:48:14,236 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:48:14,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14 WrapperNode [2025-03-03 15:48:14,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:48:14,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:48:14,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:48:14,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:48:14,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,696 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12735 [2025-03-03 15:48:14,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:48:14,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:48:14,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:48:14,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:48:14,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,846 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]. [2025-03-03 15:48:14,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,950 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:14,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:15,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:15,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:48:15,056 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:48:15,056 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:48:15,056 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:48:15,057 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (1/1) ... [2025-03-03 15:48:15,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:48:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:48:15,085 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) [2025-03-03 15:48:15,089 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 [2025-03-03 15:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-03 15:48:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-03 15:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-03 15:48:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-03 15:48:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-03 15:48:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-03 15:48:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-03 15:48:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-03 15:48:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:48:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:48:15,201 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:48:15,203 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:48:21,116 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-03 15:48:21,117 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-03 15:48:21,117 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-03 15:48:21,117 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-03 15:48:21,117 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-03 15:48:21,118 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-03 15:48:21,118 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-03 15:48:21,281 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2025-03-03 15:48:21,282 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:48:21,333 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:48:21,336 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:48:21,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:48:21 BoogieIcfgContainer [2025-03-03 15:48:21,336 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:48:21,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:48:21,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:48:21,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:48:21,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:48:12" (1/3) ... [2025-03-03 15:48:21,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d503079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:48:21, skipping insertion in model container [2025-03-03 15:48:21,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:48:14" (2/3) ... [2025-03-03 15:48:21,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d503079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:48:21, skipping insertion in model container [2025-03-03 15:48:21,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:48:21" (3/3) ... [2025-03-03 15:48:21,345 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.04.cil-2.c [2025-03-03 15:48:21,356 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:48:21,359 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label49+token_ring.04.cil-2.c that has 8 procedures, 2383 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2025-03-03 15:48:21,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:48:21,454 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;@e4175f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:48:21,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-03 15:48:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 2383 states, 2353 states have (on average 1.8474288142796431) internal successors, (4347), 2358 states have internal predecessors, (4347), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 15:48:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:21,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:21,476 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:21,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:21,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1522854527, now seen corresponding path program 1 times [2025-03-03 15:48:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272320627] [2025-03-03 15:48:21,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:21,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:21,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:21,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:21,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272320627] [2025-03-03 15:48:21,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272320627] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:21,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:21,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:48:21,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371796371] [2025-03-03 15:48:21,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:21,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:48:21,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:21,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:48:21,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:48:21,890 INFO L87 Difference]: Start difference. First operand has 2383 states, 2353 states have (on average 1.8474288142796431) internal successors, (4347), 2358 states have internal predecessors, (4347), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:22,429 INFO L93 Difference]: Finished difference Result 4954 states and 9071 transitions. [2025-03-03 15:48:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 15:48:22,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:22,455 INFO L225 Difference]: With dead ends: 4954 [2025-03-03 15:48:22,456 INFO L226 Difference]: Without dead ends: 2513 [2025-03-03 15:48:22,467 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 [2025-03-03 15:48:22,469 INFO L435 NwaCegarLoop]: 4255 mSDtfsCounter, 4520 mSDsluCounter, 8628 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4532 SdHoareTripleChecker+Valid, 12883 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:22,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4532 Valid, 12883 Invalid, 353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:48:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2025-03-03 15:48:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2498. [2025-03-03 15:48:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2450 states have (on average 1.8191836734693878) internal successors, (4457), 2454 states have internal predecessors, (4457), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-03 15:48:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4522 transitions. [2025-03-03 15:48:22,599 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4522 transitions. Word has length 91 [2025-03-03 15:48:22,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:22,599 INFO L471 AbstractCegarLoop]: Abstraction has 2498 states and 4522 transitions. [2025-03-03 15:48:22,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:22,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4522 transitions. [2025-03-03 15:48:22,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:22,603 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:22,603 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:22,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 15:48:22,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:22,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:22,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1651981443, now seen corresponding path program 1 times [2025-03-03 15:48:22,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531868376] [2025-03-03 15:48:22,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:22,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:22,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:22,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:22,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531868376] [2025-03-03 15:48:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531868376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:22,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:22,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:48:22,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568681816] [2025-03-03 15:48:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:22,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:48:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:22,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:48:22,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:48:22,812 INFO L87 Difference]: Start difference. First operand 2498 states and 4522 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:23,039 INFO L93 Difference]: Finished difference Result 2893 states and 5125 transitions. [2025-03-03 15:48:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:48:23,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:23,050 INFO L225 Difference]: With dead ends: 2893 [2025-03-03 15:48:23,051 INFO L226 Difference]: Without dead ends: 2528 [2025-03-03 15:48:23,053 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 [2025-03-03 15:48:23,054 INFO L435 NwaCegarLoop]: 4174 mSDtfsCounter, 4322 mSDsluCounter, 8269 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 12443 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:23,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 12443 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:48:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2025-03-03 15:48:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2498. [2025-03-03 15:48:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2450 states have (on average 1.8183673469387756) internal successors, (4455), 2454 states have internal predecessors, (4455), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-03 15:48:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4520 transitions. [2025-03-03 15:48:23,116 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4520 transitions. Word has length 91 [2025-03-03 15:48:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:23,116 INFO L471 AbstractCegarLoop]: Abstraction has 2498 states and 4520 transitions. [2025-03-03 15:48:23,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4520 transitions. [2025-03-03 15:48:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:23,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:23,119 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:23,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 15:48:23,119 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:23,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash -784929218, now seen corresponding path program 1 times [2025-03-03 15:48:23,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:23,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848997031] [2025-03-03 15:48:23,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:23,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:23,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:23,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:23,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:23,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:23,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:23,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848997031] [2025-03-03 15:48:23,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848997031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:23,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:48:23,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943821220] [2025-03-03 15:48:23,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:23,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:48:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:23,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:48:23,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:23,287 INFO L87 Difference]: Start difference. First operand 2498 states and 4520 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:23,705 INFO L93 Difference]: Finished difference Result 3085 states and 5404 transitions. [2025-03-03 15:48:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:48:23,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:23,716 INFO L225 Difference]: With dead ends: 3085 [2025-03-03 15:48:23,716 INFO L226 Difference]: Without dead ends: 2720 [2025-03-03 15:48:23,718 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 [2025-03-03 15:48:23,719 INFO L435 NwaCegarLoop]: 4334 mSDtfsCounter, 4438 mSDsluCounter, 12996 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 17330 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:23,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4450 Valid, 17330 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:48:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2025-03-03 15:48:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2669. [2025-03-03 15:48:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2601 states have (on average 1.7985390234525183) internal successors, (4678), 2606 states have internal predecessors, (4678), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2025-03-03 15:48:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 4772 transitions. [2025-03-03 15:48:23,780 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 4772 transitions. Word has length 91 [2025-03-03 15:48:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:23,781 INFO L471 AbstractCegarLoop]: Abstraction has 2669 states and 4772 transitions. [2025-03-03 15:48:23,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 4772 transitions. [2025-03-03 15:48:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:23,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:23,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:23,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 15:48:23,783 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:23,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash -341317795, now seen corresponding path program 1 times [2025-03-03 15:48:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:23,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009016679] [2025-03-03 15:48:23,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:23,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:23,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:23,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:23,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:23,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:23,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009016679] [2025-03-03 15:48:23,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009016679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:23,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:23,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:48:23,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538696169] [2025-03-03 15:48:23,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:23,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:48:23,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:23,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:48:23,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:23,891 INFO L87 Difference]: Start difference. First operand 2669 states and 4772 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:24,322 INFO L93 Difference]: Finished difference Result 3617 states and 6197 transitions. [2025-03-03 15:48:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:48:24,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:24,337 INFO L225 Difference]: With dead ends: 3617 [2025-03-03 15:48:24,338 INFO L226 Difference]: Without dead ends: 3081 [2025-03-03 15:48:24,342 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 [2025-03-03 15:48:24,343 INFO L435 NwaCegarLoop]: 4330 mSDtfsCounter, 4433 mSDsluCounter, 12984 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:24,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 17314 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:48:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2025-03-03 15:48:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3026. [2025-03-03 15:48:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2916 states have (on average 1.7650891632373114) internal successors, (5147), 2925 states have internal predecessors, (5147), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2025-03-03 15:48:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 5305 transitions. [2025-03-03 15:48:24,488 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 5305 transitions. Word has length 91 [2025-03-03 15:48:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:24,489 INFO L471 AbstractCegarLoop]: Abstraction has 3026 states and 5305 transitions. [2025-03-03 15:48:24,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 5305 transitions. [2025-03-03 15:48:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:24,492 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:24,492 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:24,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 15:48:24,493 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:24,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1296839074, now seen corresponding path program 1 times [2025-03-03 15:48:24,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107904137] [2025-03-03 15:48:24,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:24,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:24,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:24,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:24,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107904137] [2025-03-03 15:48:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107904137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:24,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:48:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924870208] [2025-03-03 15:48:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:24,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:48:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:24,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:48:24,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:24,633 INFO L87 Difference]: Start difference. First operand 3026 states and 5305 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:25,122 INFO L93 Difference]: Finished difference Result 4736 states and 7896 transitions. [2025-03-03 15:48:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:48:25,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:25,138 INFO L225 Difference]: With dead ends: 4736 [2025-03-03 15:48:25,138 INFO L226 Difference]: Without dead ends: 3843 [2025-03-03 15:48:25,143 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 [2025-03-03 15:48:25,143 INFO L435 NwaCegarLoop]: 4327 mSDtfsCounter, 4428 mSDsluCounter, 12975 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:25,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 17302 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:48:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2025-03-03 15:48:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3779. [2025-03-03 15:48:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3579 states have (on average 1.7164012293936854) internal successors, (6143), 3602 states have internal predecessors, (6143), 124 states have call successors, (124), 55 states have call predecessors, (124), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2025-03-03 15:48:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 6453 transitions. [2025-03-03 15:48:25,270 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 6453 transitions. Word has length 91 [2025-03-03 15:48:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:25,271 INFO L471 AbstractCegarLoop]: Abstraction has 3779 states and 6453 transitions. [2025-03-03 15:48:25,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 6453 transitions. [2025-03-03 15:48:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:25,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:25,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:25,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 15:48:25,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:25,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash 889094973, now seen corresponding path program 1 times [2025-03-03 15:48:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560236279] [2025-03-03 15:48:25,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:25,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:25,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:25,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:25,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:25,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:25,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560236279] [2025-03-03 15:48:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560236279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:25,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:25,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:48:25,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017112552] [2025-03-03 15:48:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:25,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:48:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:25,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:48:25,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:25,386 INFO L87 Difference]: Start difference. First operand 3779 states and 6453 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:25,963 INFO L93 Difference]: Finished difference Result 7375 states and 12003 transitions. [2025-03-03 15:48:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:48:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:25,989 INFO L225 Difference]: With dead ends: 7375 [2025-03-03 15:48:25,989 INFO L226 Difference]: Without dead ends: 5729 [2025-03-03 15:48:25,997 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 [2025-03-03 15:48:25,997 INFO L435 NwaCegarLoop]: 4322 mSDtfsCounter, 4557 mSDsluCounter, 12955 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:25,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4574 Valid, 17277 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 15:48:26,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5729 states. [2025-03-03 15:48:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5729 to 5360. [2025-03-03 15:48:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4970 states have (on average 1.6617706237424548) internal successors, (8259), 5039 states have internal predecessors, (8259), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-03 15:48:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8953 transitions. [2025-03-03 15:48:26,206 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8953 transitions. Word has length 91 [2025-03-03 15:48:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:26,206 INFO L471 AbstractCegarLoop]: Abstraction has 5360 states and 8953 transitions. [2025-03-03 15:48:26,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8953 transitions. [2025-03-03 15:48:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:26,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:26,209 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:26,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 15:48:26,209 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:26,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 405419646, now seen corresponding path program 1 times [2025-03-03 15:48:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:26,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299488239] [2025-03-03 15:48:26,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:26,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:26,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:26,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:26,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:26,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:26,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:26,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299488239] [2025-03-03 15:48:26,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299488239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:26,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:26,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:48:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027476727] [2025-03-03 15:48:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:26,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:48:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:26,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:48:26,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:48:26,284 INFO L87 Difference]: Start difference. First operand 5360 states and 8953 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:26,547 INFO L93 Difference]: Finished difference Result 9002 states and 14802 transitions. [2025-03-03 15:48:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:48:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:26,583 INFO L225 Difference]: With dead ends: 9002 [2025-03-03 15:48:26,583 INFO L226 Difference]: Without dead ends: 5775 [2025-03-03 15:48:26,593 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 [2025-03-03 15:48:26,594 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4320 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 12391 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:26,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 12391 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:48:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2025-03-03 15:48:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5360. [2025-03-03 15:48:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4970 states have (on average 1.6583501006036216) internal successors, (8242), 5039 states have internal predecessors, (8242), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-03 15:48:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8936 transitions. [2025-03-03 15:48:26,804 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8936 transitions. Word has length 91 [2025-03-03 15:48:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:26,806 INFO L471 AbstractCegarLoop]: Abstraction has 5360 states and 8936 transitions. [2025-03-03 15:48:26,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8936 transitions. [2025-03-03 15:48:26,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:26,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:26,811 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:26,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 15:48:26,811 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:26,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1359648541, now seen corresponding path program 1 times [2025-03-03 15:48:26,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:26,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239407913] [2025-03-03 15:48:26,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:26,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:26,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:26,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:26,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:26,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:26,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:26,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239407913] [2025-03-03 15:48:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239407913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:26,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:26,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:48:26,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551008120] [2025-03-03 15:48:26,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:26,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:48:26,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:26,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:48:26,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:26,906 INFO L87 Difference]: Start difference. First operand 5360 states and 8936 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:27,449 INFO L93 Difference]: Finished difference Result 12330 states and 20074 transitions. [2025-03-03 15:48:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:48:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:27,481 INFO L225 Difference]: With dead ends: 12330 [2025-03-03 15:48:27,484 INFO L226 Difference]: Without dead ends: 9103 [2025-03-03 15:48:27,498 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 [2025-03-03 15:48:27,498 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 4484 mSDsluCounter, 12932 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 17246 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:27,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 17246 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:48:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9103 states. [2025-03-03 15:48:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9103 to 8660. [2025-03-03 15:48:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7844 states have (on average 1.6058133605303417) internal successors, (12596), 8059 states have internal predecessors, (12596), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-03 15:48:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14426 transitions. [2025-03-03 15:48:27,800 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14426 transitions. Word has length 91 [2025-03-03 15:48:27,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:27,800 INFO L471 AbstractCegarLoop]: Abstraction has 8660 states and 14426 transitions. [2025-03-03 15:48:27,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14426 transitions. [2025-03-03 15:48:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:27,806 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:27,806 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:27,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 15:48:27,806 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:27,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1113335454, now seen corresponding path program 1 times [2025-03-03 15:48:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:27,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238269256] [2025-03-03 15:48:27,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:27,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:27,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:27,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:27,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:27,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:27,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238269256] [2025-03-03 15:48:27,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238269256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:27,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:27,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:48:27,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402336375] [2025-03-03 15:48:27,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:27,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:48:27,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:27,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:48:27,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:48:27,910 INFO L87 Difference]: Start difference. First operand 8660 states and 14426 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:28,282 INFO L93 Difference]: Finished difference Result 15922 states and 26702 transitions. [2025-03-03 15:48:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:48:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:28,313 INFO L225 Difference]: With dead ends: 15922 [2025-03-03 15:48:28,313 INFO L226 Difference]: Without dead ends: 9395 [2025-03-03 15:48:28,333 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 [2025-03-03 15:48:28,336 INFO L435 NwaCegarLoop]: 4158 mSDtfsCounter, 4309 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 12395 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:28,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4321 Valid, 12395 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:48:28,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2025-03-03 15:48:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 8660. [2025-03-03 15:48:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7844 states have (on average 1.6016063233044364) internal successors, (12563), 8059 states have internal predecessors, (12563), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-03 15:48:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14393 transitions. [2025-03-03 15:48:28,648 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14393 transitions. Word has length 91 [2025-03-03 15:48:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:28,648 INFO L471 AbstractCegarLoop]: Abstraction has 8660 states and 14393 transitions. [2025-03-03 15:48:28,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14393 transitions. [2025-03-03 15:48:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:28,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:28,655 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:28,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 15:48:28,656 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:28,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -557178115, now seen corresponding path program 1 times [2025-03-03 15:48:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507225073] [2025-03-03 15:48:28,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:28,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:28,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:28,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:28,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:28,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:28,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507225073] [2025-03-03 15:48:28,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507225073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:28,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:28,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:48:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458513873] [2025-03-03 15:48:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:28,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:48:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:28,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:48:28,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:48:28,762 INFO L87 Difference]: Start difference. First operand 8660 states and 14393 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:29,140 INFO L93 Difference]: Finished difference Result 15677 states and 26146 transitions. [2025-03-03 15:48:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:48:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:29,173 INFO L225 Difference]: With dead ends: 15677 [2025-03-03 15:48:29,173 INFO L226 Difference]: Without dead ends: 9150 [2025-03-03 15:48:29,189 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 [2025-03-03 15:48:29,190 INFO L435 NwaCegarLoop]: 4155 mSDtfsCounter, 4306 mSDsluCounter, 8232 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 12387 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:29,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4318 Valid, 12387 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:48:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9150 states. [2025-03-03 15:48:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9150 to 8660. [2025-03-03 15:48:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7844 states have (on average 1.5973992860785313) internal successors, (12530), 8059 states have internal predecessors, (12530), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-03 15:48:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14360 transitions. [2025-03-03 15:48:29,597 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14360 transitions. Word has length 91 [2025-03-03 15:48:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:29,597 INFO L471 AbstractCegarLoop]: Abstraction has 8660 states and 14360 transitions. [2025-03-03 15:48:29,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14360 transitions. [2025-03-03 15:48:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:48:29,602 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:29,602 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:29,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 15:48:29,602 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:29,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1165254978, now seen corresponding path program 1 times [2025-03-03 15:48:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215685303] [2025-03-03 15:48:29,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:29,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:48:29,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:48:29,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:29,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:48:29,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215685303] [2025-03-03 15:48:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215685303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:29,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:48:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:48:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978070823] [2025-03-03 15:48:29,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:29,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:48:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:29,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:48:29,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:48:29,659 INFO L87 Difference]: Start difference. First operand 8660 states and 14360 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:30,243 INFO L93 Difference]: Finished difference Result 21377 states and 34893 transitions. [2025-03-03 15:48:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:48:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-03 15:48:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:30,291 INFO L225 Difference]: With dead ends: 21377 [2025-03-03 15:48:30,291 INFO L226 Difference]: Without dead ends: 14851 [2025-03-03 15:48:30,313 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 [2025-03-03 15:48:30,314 INFO L435 NwaCegarLoop]: 4474 mSDtfsCounter, 4434 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4434 SdHoareTripleChecker+Valid, 8879 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:48:30,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4434 Valid, 8879 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:48:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14851 states. [2025-03-03 15:48:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14851 to 14818. [2025-03-03 15:48:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14818 states, 13194 states have (on average 1.538123389419433) internal successors, (20294), 13654 states have internal predecessors, (20294), 802 states have call successors, (802), 397 states have call predecessors, (802), 820 states have return successors, (2817), 798 states have call predecessors, (2817), 800 states have call successors, (2817) [2025-03-03 15:48:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14818 states to 14818 states and 23913 transitions. [2025-03-03 15:48:30,960 INFO L78 Accepts]: Start accepts. Automaton has 14818 states and 23913 transitions. Word has length 91 [2025-03-03 15:48:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:30,960 INFO L471 AbstractCegarLoop]: Abstraction has 14818 states and 23913 transitions. [2025-03-03 15:48:30,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:48:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 14818 states and 23913 transitions. [2025-03-03 15:48:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:48:30,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:30,987 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:30,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 15:48:30,987 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:30,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash -362071702, now seen corresponding path program 1 times [2025-03-03 15:48:30,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:30,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429692789] [2025-03-03 15:48:30,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:30,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:30,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:30,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:30,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:30,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:48:31,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:31,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429692789] [2025-03-03 15:48:31,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429692789] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:48:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360511628] [2025-03-03 15:48:31,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:31,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:48:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:48:31,057 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) [2025-03-03 15:48:31,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 15:48:31,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:31,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:31,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:31,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:31,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:48:31,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:48:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 15:48:31,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:48:31,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360511628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:31,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:48:31,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:48:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448757823] [2025-03-03 15:48:31,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:31,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:48:31,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:31,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:48:31,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:31,231 INFO L87 Difference]: Start difference. First operand 14818 states and 23913 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:48:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:32,007 INFO L93 Difference]: Finished difference Result 39855 states and 63621 transitions. [2025-03-03 15:48:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:48:32,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2025-03-03 15:48:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:32,118 INFO L225 Difference]: With dead ends: 39855 [2025-03-03 15:48:32,119 INFO L226 Difference]: Without dead ends: 27171 [2025-03-03 15:48:32,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:32,153 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4191 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4492 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 [2025-03-03 15:48:32,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4492 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:48:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27171 states. [2025-03-03 15:48:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27171 to 26969. [2025-03-03 15:48:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26969 states, 23795 states have (on average 1.5109897037192688) internal successors, (35954), 24712 states have internal predecessors, (35954), 1532 states have call successors, (1532), 793 states have call predecessors, (1532), 1640 states have return successors, (5533), 1495 states have call predecessors, (5533), 1530 states have call successors, (5533) [2025-03-03 15:48:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26969 states to 26969 states and 43019 transitions. [2025-03-03 15:48:33,520 INFO L78 Accepts]: Start accepts. Automaton has 26969 states and 43019 transitions. Word has length 149 [2025-03-03 15:48:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:33,521 INFO L471 AbstractCegarLoop]: Abstraction has 26969 states and 43019 transitions. [2025-03-03 15:48:33,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:48:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 26969 states and 43019 transitions. [2025-03-03 15:48:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:48:33,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:33,561 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:33,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 15:48:33,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 15:48:33,762 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:33,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 665905444, now seen corresponding path program 1 times [2025-03-03 15:48:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522130192] [2025-03-03 15:48:33,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:33,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:33,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:33,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:33,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:48:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522130192] [2025-03-03 15:48:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522130192] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:48:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734596979] [2025-03-03 15:48:33,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:48:33,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:48:33,839 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) [2025-03-03 15:48:33,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 15:48:33,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:33,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:33,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:33,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:33,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:48:33,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:48:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 15:48:33,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:48:33,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734596979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:33,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:48:33,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:48:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049108803] [2025-03-03 15:48:33,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:33,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:48:33,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:33,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:48:33,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:33,998 INFO L87 Difference]: Start difference. First operand 26969 states and 43019 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:48:36,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:36,120 INFO L93 Difference]: Finished difference Result 75978 states and 120745 transitions. [2025-03-03 15:48:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:48:36,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2025-03-03 15:48:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:36,325 INFO L225 Difference]: With dead ends: 75978 [2025-03-03 15:48:36,325 INFO L226 Difference]: Without dead ends: 51143 [2025-03-03 15:48:36,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:36,390 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4185 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4492 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 [2025-03-03 15:48:36,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 4492 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:48:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51143 states. [2025-03-03 15:48:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51143 to 50743. [2025-03-03 15:48:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50743 states, 44535 states have (on average 1.4957673739755248) internal successors, (66614), 46366 states have internal predecessors, (66614), 2926 states have call successors, (2926), 1585 states have call predecessors, (2926), 3280 states have return successors, (10899), 2823 states have call predecessors, (10899), 2924 states have call successors, (10899) [2025-03-03 15:48:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50743 states to 50743 states and 80439 transitions. [2025-03-03 15:48:38,654 INFO L78 Accepts]: Start accepts. Automaton has 50743 states and 80439 transitions. Word has length 149 [2025-03-03 15:48:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:38,655 INFO L471 AbstractCegarLoop]: Abstraction has 50743 states and 80439 transitions. [2025-03-03 15:48:38,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:48:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 50743 states and 80439 transitions. [2025-03-03 15:48:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:48:38,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:38,699 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:38,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 15:48:38,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 15:48:38,900 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:38,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2012965982, now seen corresponding path program 1 times [2025-03-03 15:48:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:38,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600771037] [2025-03-03 15:48:38,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:38,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:38,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:38,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:38,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:48:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600771037] [2025-03-03 15:48:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600771037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:48:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995522672] [2025-03-03 15:48:39,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:39,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:48:39,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:48:39,104 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) [2025-03-03 15:48:39,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 15:48:39,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:39,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:39,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:39,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:39,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:48:39,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:48:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 15:48:39,259 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:48:39,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995522672] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:39,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:48:39,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:48:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139700216] [2025-03-03 15:48:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:39,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:48:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:39,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:48:39,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:39,262 INFO L87 Difference]: Start difference. First operand 50743 states and 80439 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:48:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:48:43,680 INFO L93 Difference]: Finished difference Result 147024 states and 233191 transitions. [2025-03-03 15:48:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:48:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2025-03-03 15:48:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:48:44,050 INFO L225 Difference]: With dead ends: 147024 [2025-03-03 15:48:44,050 INFO L226 Difference]: Without dead ends: 98415 [2025-03-03 15:48:44,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:44,144 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4197 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 4492 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 [2025-03-03 15:48:44,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4197 Valid, 4492 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:48:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98415 states. [2025-03-03 15:48:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98415 to 97619. [2025-03-03 15:48:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97619 states, 85347 states have (on average 1.4865197370733594) internal successors, (126870), 89006 states have internal predecessors, (126870), 5710 states have call successors, (5710), 3169 states have call predecessors, (5710), 6560 states have return successors, (21627), 5475 states have call predecessors, (21627), 5708 states have call successors, (21627) [2025-03-03 15:48:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97619 states to 97619 states and 154207 transitions. [2025-03-03 15:48:49,089 INFO L78 Accepts]: Start accepts. Automaton has 97619 states and 154207 transitions. Word has length 149 [2025-03-03 15:48:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:48:49,089 INFO L471 AbstractCegarLoop]: Abstraction has 97619 states and 154207 transitions. [2025-03-03 15:48:49,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:48:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 97619 states and 154207 transitions. [2025-03-03 15:48:49,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:48:49,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:48:49,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:48:49,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 15:48:49,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:48:49,365 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:48:49,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:48:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1085740904, now seen corresponding path program 1 times [2025-03-03 15:48:49,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:48:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113848093] [2025-03-03 15:48:49,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:48:49,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:49,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:49,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:49,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:48:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:48:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113848093] [2025-03-03 15:48:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113848093] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:48:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689038504] [2025-03-03 15:48:49,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:48:49,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:48:49,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:48:49,428 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) [2025-03-03 15:48:49,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 15:48:49,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:48:49,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:48:49,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:48:49,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:48:49,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:48:49,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:48:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 15:48:49,581 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:48:49,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689038504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:48:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:48:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:48:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520420251] [2025-03-03 15:48:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:48:49,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:48:49,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:48:49,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:48:49,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:48:49,586 INFO L87 Difference]: Start difference. First operand 97619 states and 154207 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)