./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:56:44,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:56:44,942 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:56:44,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:56:44,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:56:44,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:56:44,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:56:44,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:56:44,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:56:44,968 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:56:44,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:56:44,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:56:44,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:56:44,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:56:44,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:56:44,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:56:44,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:44,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:56:44,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:56:44,971 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 -> 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 [2025-03-16 19:56:45,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:56:45,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:56:45,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:56:45,201 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:56:45,201 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:56:45,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2025-03-16 19:56:46,365 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f332090cd/d674de53716b49b9afc159121cf33e56/FLAG4ea3f633a [2025-03-16 19:56:46,822 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:56:46,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2025-03-16 19:56:46,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f332090cd/d674de53716b49b9afc159121cf33e56/FLAG4ea3f633a [2025-03-16 19:56:46,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f332090cd/d674de53716b49b9afc159121cf33e56 [2025-03-16 19:56:46,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:56:46,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:56:46,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:46,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:56:46,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:56:46,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:46" (1/1) ... [2025-03-16 19:56:46,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f16c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:46, skipping insertion in model container [2025-03-16 19:56:46,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:46" (1/1) ... [2025-03-16 19:56:47,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:56:48,144 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_label42+token_ring.03.cil-1.c[378560,378573] [2025-03-16 19:56:48,168 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_label42+token_ring.03.cil-1.c[383339,383352] [2025-03-16 19:56:48,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:48,353 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:56:48,846 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_label42+token_ring.03.cil-1.c[378560,378573] [2025-03-16 19:56:48,853 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_label42+token_ring.03.cil-1.c[383339,383352] [2025-03-16 19:56:48,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:48,902 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:56:48,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48 WrapperNode [2025-03-16 19:56:48,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:48,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:48,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:56:48,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:56:48,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:48,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,234 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12678 [2025-03-16 19:56:49,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:49,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:56:49,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:56:49,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:56:49,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,427 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:56:49,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,636 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:56:49,785 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:56:49,785 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:56:49,785 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:56:49,786 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (1/1) ... [2025-03-16 19:56:49,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:56:49,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:56:49,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:56:49,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:56:49,834 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:56:49,834 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:56:49,834 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:56:49,834 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:56:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 19:56:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:56:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:56:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:56:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:56:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:56:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:56:49,921 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:56:49,923 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:56:55,973 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:56:55,973 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:56:55,974 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:56:55,974 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:56:55,974 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:56:55,974 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:56:55,974 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:56:56,178 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2025-03-16 19:56:56,178 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:56:56,229 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:56:56,230 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:56:56,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:56 BoogieIcfgContainer [2025-03-16 19:56:56,231 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:56:56,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:56:56,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:56:56,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:56:56,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:56:46" (1/3) ... [2025-03-16 19:56:56,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679bb1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:56, skipping insertion in model container [2025-03-16 19:56:56,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:48" (2/3) ... [2025-03-16 19:56:56,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679bb1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:56, skipping insertion in model container [2025-03-16 19:56:56,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:56" (3/3) ... [2025-03-16 19:56:56,240 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-1.c [2025-03-16 19:56:56,253 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:56:56,255 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.03.cil-1.c that has 8 procedures, 2277 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2025-03-16 19:56:56,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:56:56,362 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;@42a2563b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:56:56,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:56:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 2277 states, 2249 states have (on average 1.879057358826145) internal successors, (4226), 2253 states have internal predecessors, (4226), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-16 19:56:56,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:56:56,384 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:56,384 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] [2025-03-16 19:56:56,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:56,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash 46472052, now seen corresponding path program 1 times [2025-03-16 19:56:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916523254] [2025-03-16 19:56:56,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:56,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:56:56,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:56:56,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:56,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916523254] [2025-03-16 19:56:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916523254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:56,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:56,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322793404] [2025-03-16 19:56:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:56,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:56,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:56,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:56,778 INFO L87 Difference]: Start difference. First operand has 2277 states, 2249 states have (on average 1.879057358826145) internal successors, (4226), 2253 states have internal predecessors, (4226), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-16 19:56:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:57,236 INFO L93 Difference]: Finished difference Result 4699 states and 8763 transitions. [2025-03-16 19:56:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:56:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 72 [2025-03-16 19:56:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:57,271 INFO L225 Difference]: With dead ends: 4699 [2025-03-16 19:56:57,271 INFO L226 Difference]: Without dead ends: 2423 [2025-03-16 19:56:57,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:57,285 INFO L435 NwaCegarLoop]: 4144 mSDtfsCounter, 4349 mSDsluCounter, 8371 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 12515 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:57,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 12515 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:57,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2025-03-16 19:56:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2410. [2025-03-16 19:56:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2364 states have (on average 1.8358714043993232) internal successors, (4340), 2368 states have internal predecessors, (4340), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-16 19:56:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 4401 transitions. [2025-03-16 19:56:57,419 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 4401 transitions. Word has length 72 [2025-03-16 19:56:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:57,420 INFO L471 AbstractCegarLoop]: Abstraction has 2410 states and 4401 transitions. [2025-03-16 19:56:57,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-16 19:56:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 4401 transitions. [2025-03-16 19:56:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:56:57,424 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:57,424 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] [2025-03-16 19:56:57,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:56:57,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:57,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 178403826, now seen corresponding path program 1 times [2025-03-16 19:56:57,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:57,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588826730] [2025-03-16 19:56:57,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:57,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:57,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:56:57,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:56:57,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:57,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588826730] [2025-03-16 19:56:57,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588826730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:57,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:57,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:57,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201241445] [2025-03-16 19:56:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:57,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:57,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:57,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:57,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:57,589 INFO L87 Difference]: Start difference. First operand 2410 states and 4401 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:57,805 INFO L93 Difference]: Finished difference Result 2714 states and 4875 transitions. [2025-03-16 19:56:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:57,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 72 [2025-03-16 19:56:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:57,819 INFO L225 Difference]: With dead ends: 2714 [2025-03-16 19:56:57,819 INFO L226 Difference]: Without dead ends: 2434 [2025-03-16 19:56:57,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:57,822 INFO L435 NwaCegarLoop]: 4126 mSDtfsCounter, 4241 mSDsluCounter, 8183 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 12309 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:57,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 12309 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:56:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2025-03-16 19:56:57,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2410. [2025-03-16 19:56:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2364 states have (on average 1.8350253807106598) internal successors, (4338), 2368 states have internal predecessors, (4338), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-16 19:56:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 4399 transitions. [2025-03-16 19:56:57,892 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 4399 transitions. Word has length 72 [2025-03-16 19:56:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:57,892 INFO L471 AbstractCegarLoop]: Abstraction has 2410 states and 4399 transitions. [2025-03-16 19:56:57,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 4399 transitions. [2025-03-16 19:56:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:56:57,897 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:57,897 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] [2025-03-16 19:56:57,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:56:57,898 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:57,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash 458753715, now seen corresponding path program 1 times [2025-03-16 19:56:57,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:57,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120494647] [2025-03-16 19:56:57,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:57,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:57,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:56:57,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:56:57,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:57,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:58,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:58,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120494647] [2025-03-16 19:56:58,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120494647] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:58,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:58,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:58,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094742939] [2025-03-16 19:56:58,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:58,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:58,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:58,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:58,125 INFO L87 Difference]: Start difference. First operand 2410 states and 4399 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:58,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:58,475 INFO L93 Difference]: Finished difference Result 2861 states and 5090 transitions. [2025-03-16 19:56:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 72 [2025-03-16 19:56:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:58,485 INFO L225 Difference]: With dead ends: 2861 [2025-03-16 19:56:58,485 INFO L226 Difference]: Without dead ends: 2581 [2025-03-16 19:56:58,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:58,487 INFO L435 NwaCegarLoop]: 4250 mSDtfsCounter, 4326 mSDsluCounter, 12721 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 16971 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:58,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4337 Valid, 16971 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2025-03-16 19:56:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2540. [2025-03-16 19:56:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2475 states have (on average 1.821010101010101) internal successors, (4507), 2480 states have internal predecessors, (4507), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-03-16 19:56:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 4595 transitions. [2025-03-16 19:56:58,543 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 4595 transitions. Word has length 72 [2025-03-16 19:56:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:58,544 INFO L471 AbstractCegarLoop]: Abstraction has 2540 states and 4595 transitions. [2025-03-16 19:56:58,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 4595 transitions. [2025-03-16 19:56:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:56:58,545 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:58,545 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] [2025-03-16 19:56:58,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:56:58,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:58,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1471865390, now seen corresponding path program 1 times [2025-03-16 19:56:58,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915018596] [2025-03-16 19:56:58,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:58,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:56:58,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:56:58,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:58,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:58,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:58,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915018596] [2025-03-16 19:56:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915018596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941948420] [2025-03-16 19:56:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:58,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:58,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:58,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:58,680 INFO L87 Difference]: Start difference. First operand 2540 states and 4595 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:59,039 INFO L93 Difference]: Finished difference Result 3264 states and 5703 transitions. [2025-03-16 19:56:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 72 [2025-03-16 19:56:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:59,050 INFO L225 Difference]: With dead ends: 3264 [2025-03-16 19:56:59,050 INFO L226 Difference]: Without dead ends: 2854 [2025-03-16 19:56:59,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:59,053 INFO L435 NwaCegarLoop]: 4246 mSDtfsCounter, 4321 mSDsluCounter, 12709 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 16955 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:59,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 16955 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2025-03-16 19:56:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2811. [2025-03-16 19:56:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2706 states have (on average 1.7960088691796008) internal successors, (4860), 2715 states have internal predecessors, (4860), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2025-03-16 19:56:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 5008 transitions. [2025-03-16 19:56:59,134 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 5008 transitions. Word has length 72 [2025-03-16 19:56:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:59,134 INFO L471 AbstractCegarLoop]: Abstraction has 2811 states and 5008 transitions. [2025-03-16 19:56:59,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 5008 transitions. [2025-03-16 19:56:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:56:59,136 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:59,137 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] [2025-03-16 19:56:59,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:56:59,137 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:59,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash -841406765, now seen corresponding path program 1 times [2025-03-16 19:56:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368211957] [2025-03-16 19:56:59,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:59,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:56:59,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:56:59,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:59,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:59,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:59,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368211957] [2025-03-16 19:56:59,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368211957] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:59,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:59,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590446932] [2025-03-16 19:56:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:59,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:59,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:59,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:59,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:59,340 INFO L87 Difference]: Start difference. First operand 2811 states and 5008 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:56:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:59,943 INFO L93 Difference]: Finished difference Result 4197 states and 7147 transitions. [2025-03-16 19:56:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:59,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 72 [2025-03-16 19:56:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:59,956 INFO L225 Difference]: With dead ends: 4197 [2025-03-16 19:56:59,956 INFO L226 Difference]: Without dead ends: 3516 [2025-03-16 19:56:59,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:59,960 INFO L435 NwaCegarLoop]: 4241 mSDtfsCounter, 4408 mSDsluCounter, 12689 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4423 SdHoareTripleChecker+Valid, 16930 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:59,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4423 Valid, 16930 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:56:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2025-03-16 19:57:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 3368. [2025-03-16 19:57:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3181 states have (on average 1.757937755422823) internal successors, (5592), 3204 states have internal predecessors, (5592), 111 states have call successors, (111), 55 states have call predecessors, (111), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2025-03-16 19:57:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5876 transitions. [2025-03-16 19:57:00,051 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5876 transitions. Word has length 72 [2025-03-16 19:57:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:00,051 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 5876 transitions. [2025-03-16 19:57:00,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:57:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5876 transitions. [2025-03-16 19:57:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:57:00,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:00,055 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] [2025-03-16 19:57:00,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:57:00,055 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:00,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash -821069390, now seen corresponding path program 1 times [2025-03-16 19:57:00,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:00,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527414166] [2025-03-16 19:57:00,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:00,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:00,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:57:00,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:57:00,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:00,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527414166] [2025-03-16 19:57:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527414166] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583074685] [2025-03-16 19:57:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:00,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:00,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:00,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:00,134 INFO L87 Difference]: Start difference. First operand 3368 states and 5876 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:57:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:00,344 INFO L93 Difference]: Finished difference Result 4722 states and 8008 transitions. [2025-03-16 19:57:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 72 [2025-03-16 19:57:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:00,358 INFO L225 Difference]: With dead ends: 4722 [2025-03-16 19:57:00,359 INFO L226 Difference]: Without dead ends: 3484 [2025-03-16 19:57:00,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:00,363 INFO L435 NwaCegarLoop]: 4117 mSDtfsCounter, 4233 mSDsluCounter, 8164 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4244 SdHoareTripleChecker+Valid, 12281 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:00,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4244 Valid, 12281 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2025-03-16 19:57:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3368. [2025-03-16 19:57:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3181 states have (on average 1.7551084564602326) internal successors, (5583), 3204 states have internal predecessors, (5583), 111 states have call successors, (111), 55 states have call predecessors, (111), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2025-03-16 19:57:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5867 transitions. [2025-03-16 19:57:00,514 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5867 transitions. Word has length 72 [2025-03-16 19:57:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:00,514 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 5867 transitions. [2025-03-16 19:57:00,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:57:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5867 transitions. [2025-03-16 19:57:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:57:00,516 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:00,516 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] [2025-03-16 19:57:00,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:57:00,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:00,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash -127676685, now seen corresponding path program 1 times [2025-03-16 19:57:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:00,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139834169] [2025-03-16 19:57:00,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:00,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:57:00,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:57:00,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:00,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:00,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:00,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139834169] [2025-03-16 19:57:00,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139834169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:00,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:00,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354067770] [2025-03-16 19:57:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:00,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:00,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:00,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:00,583 INFO L87 Difference]: Start difference. First operand 3368 states and 5867 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:57:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:00,786 INFO L93 Difference]: Finished difference Result 4664 states and 7874 transitions. [2025-03-16 19:57:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:00,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 72 [2025-03-16 19:57:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:00,800 INFO L225 Difference]: With dead ends: 4664 [2025-03-16 19:57:00,800 INFO L226 Difference]: Without dead ends: 3426 [2025-03-16 19:57:00,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:00,805 INFO L435 NwaCegarLoop]: 4112 mSDtfsCounter, 4229 mSDsluCounter, 8155 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4240 SdHoareTripleChecker+Valid, 12267 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:00,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4240 Valid, 12267 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2025-03-16 19:57:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3368. [2025-03-16 19:57:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3181 states have (on average 1.7522791574976422) internal successors, (5574), 3204 states have internal predecessors, (5574), 111 states have call successors, (111), 55 states have call predecessors, (111), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2025-03-16 19:57:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5858 transitions. [2025-03-16 19:57:00,910 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5858 transitions. Word has length 72 [2025-03-16 19:57:00,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:00,910 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 5858 transitions. [2025-03-16 19:57:00,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-16 19:57:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5858 transitions. [2025-03-16 19:57:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 19:57:00,913 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:00,913 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] [2025-03-16 19:57:00,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:57:00,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:00,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2053209996, now seen corresponding path program 1 times [2025-03-16 19:57:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:00,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810255423] [2025-03-16 19:57:00,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:00,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:00,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 19:57:00,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 19:57:00,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:00,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:00,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810255423] [2025-03-16 19:57:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810255423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:00,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:00,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:57:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294148500] [2025-03-16 19:57:00,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:00,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:57:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:00,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:57:00,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:57:00,969 INFO L87 Difference]: Start difference. First operand 3368 states and 5858 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-16 19:57:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:01,148 INFO L93 Difference]: Finished difference Result 5756 states and 9562 transitions. [2025-03-16 19:57:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 72 [2025-03-16 19:57:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:01,173 INFO L225 Difference]: With dead ends: 5756 [2025-03-16 19:57:01,174 INFO L226 Difference]: Without dead ends: 4519 [2025-03-16 19:57:01,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:57:01,180 INFO L435 NwaCegarLoop]: 4359 mSDtfsCounter, 4332 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 8653 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:01,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 8653 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2025-03-16 19:57:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4510. [2025-03-16 19:57:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4144 states have (on average 1.6821911196911197) internal successors, (6971), 4196 states have internal predecessors, (6971), 216 states have call successors, (216), 109 states have call predecessors, (216), 148 states have return successors, (335), 212 states have call predecessors, (335), 214 states have call successors, (335) [2025-03-16 19:57:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 7522 transitions. [2025-03-16 19:57:01,357 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 7522 transitions. Word has length 72 [2025-03-16 19:57:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:01,358 INFO L471 AbstractCegarLoop]: Abstraction has 4510 states and 7522 transitions. [2025-03-16 19:57:01,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-16 19:57:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 7522 transitions. [2025-03-16 19:57:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 19:57:01,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:01,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:01,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:57:01,364 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:01,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1793053810, now seen corresponding path program 1 times [2025-03-16 19:57:01,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717134616] [2025-03-16 19:57:01,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:01,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:01,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:01,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:01,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:01,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717134616] [2025-03-16 19:57:01,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717134616] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184128045] [2025-03-16 19:57:01,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:01,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:01,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:01,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:57:01,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:01,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:01,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:01,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:01,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:01,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 19:57:01,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184128045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:01,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:01,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:57:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219525236] [2025-03-16 19:57:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:01,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:01,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:01,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:01,595 INFO L87 Difference]: Start difference. First operand 4510 states and 7522 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2025-03-16 19:57:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:01,826 INFO L93 Difference]: Finished difference Result 9177 states and 14566 transitions. [2025-03-16 19:57:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:01,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 116 [2025-03-16 19:57:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:01,850 INFO L225 Difference]: With dead ends: 9177 [2025-03-16 19:57:01,850 INFO L226 Difference]: Without dead ends: 6798 [2025-03-16 19:57:01,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:01,857 INFO L435 NwaCegarLoop]: 4178 mSDtfsCounter, 4138 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:01,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 4376 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2025-03-16 19:57:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 6776. [2025-03-16 19:57:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 6070 states have (on average 1.6191103789126853) internal successors, (9828), 6171 states have internal predecessors, (9828), 408 states have call successors, (408), 217 states have call predecessors, (408), 296 states have return successors, (641), 395 states have call predecessors, (641), 406 states have call successors, (641) [2025-03-16 19:57:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 10877 transitions. [2025-03-16 19:57:02,222 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 10877 transitions. Word has length 116 [2025-03-16 19:57:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:02,223 INFO L471 AbstractCegarLoop]: Abstraction has 6776 states and 10877 transitions. [2025-03-16 19:57:02,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2025-03-16 19:57:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 10877 transitions. [2025-03-16 19:57:02,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 19:57:02,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:02,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:02,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 19:57:02,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:02,432 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:02,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1146041800, now seen corresponding path program 1 times [2025-03-16 19:57:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063685031] [2025-03-16 19:57:02,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:02,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:02,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:02,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:02,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:02,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:02,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063685031] [2025-03-16 19:57:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063685031] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643919588] [2025-03-16 19:57:02,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:02,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:02,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:02,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:57:02,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:02,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:02,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:02,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:02,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:02,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 19:57:02,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643919588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:02,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:02,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:57:02,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576702874] [2025-03-16 19:57:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:02,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:02,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:02,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:02,651 INFO L87 Difference]: Start difference. First operand 6776 states and 10877 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2025-03-16 19:57:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:03,002 INFO L93 Difference]: Finished difference Result 15933 states and 24651 transitions. [2025-03-16 19:57:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 116 [2025-03-16 19:57:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:03,032 INFO L225 Difference]: With dead ends: 15933 [2025-03-16 19:57:03,032 INFO L226 Difference]: Without dead ends: 11288 [2025-03-16 19:57:03,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:03,043 INFO L435 NwaCegarLoop]: 4178 mSDtfsCounter, 4133 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:03,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4376 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11288 states. [2025-03-16 19:57:03,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11288 to 11248. [2025-03-16 19:57:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 9864 states have (on average 1.5642741281427412) internal successors, (15430), 10063 states have internal predecessors, (15430), 790 states have call successors, (790), 433 states have call predecessors, (790), 592 states have return successors, (1251), 759 states have call predecessors, (1251), 788 states have call successors, (1251) [2025-03-16 19:57:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 17471 transitions. [2025-03-16 19:57:03,728 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 17471 transitions. Word has length 116 [2025-03-16 19:57:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:03,736 INFO L471 AbstractCegarLoop]: Abstraction has 11248 states and 17471 transitions. [2025-03-16 19:57:03,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2025-03-16 19:57:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 17471 transitions. [2025-03-16 19:57:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 19:57:03,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:03,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:03,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:03,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 19:57:03,953 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:03,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 144518990, now seen corresponding path program 1 times [2025-03-16 19:57:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040660483] [2025-03-16 19:57:03,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:03,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:03,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:03,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:03,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040660483] [2025-03-16 19:57:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040660483] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516601324] [2025-03-16 19:57:04,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:04,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:04,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:04,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:04,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 19:57:04,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:04,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:04,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:04,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:04,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:04,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 19:57:04,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:04,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516601324] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:04,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:04,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:57:04,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375058439] [2025-03-16 19:57:04,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:04,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:04,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:04,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:04,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:04,165 INFO L87 Difference]: Start difference. First operand 11248 states and 17471 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2025-03-16 19:57:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:04,719 INFO L93 Difference]: Finished difference Result 29121 states and 44231 transitions. [2025-03-16 19:57:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:04,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 116 [2025-03-16 19:57:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:04,787 INFO L225 Difference]: With dead ends: 29121 [2025-03-16 19:57:04,788 INFO L226 Difference]: Without dead ends: 20004 [2025-03-16 19:57:04,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:04,813 INFO L435 NwaCegarLoop]: 4178 mSDtfsCounter, 4143 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:04,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4143 Valid, 4376 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20004 states. [2025-03-16 19:57:05,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20004 to 19928. [2025-03-16 19:57:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19928 states, 17240 states have (on average 1.5263341067285383) internal successors, (26314), 17635 states have internal predecessors, (26314), 1502 states have call successors, (1502), 865 states have call predecessors, (1502), 1184 states have return successors, (2419), 1435 states have call predecessors, (2419), 1500 states have call successors, (2419) [2025-03-16 19:57:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19928 states to 19928 states and 30235 transitions. [2025-03-16 19:57:05,880 INFO L78 Accepts]: Start accepts. Automaton has 19928 states and 30235 transitions. Word has length 116 [2025-03-16 19:57:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:05,880 INFO L471 AbstractCegarLoop]: Abstraction has 19928 states and 30235 transitions. [2025-03-16 19:57:05,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2025-03-16 19:57:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 19928 states and 30235 transitions. [2025-03-16 19:57:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 19:57:05,896 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:05,896 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:05,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:06,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:06,098 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:06,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash -230852268, now seen corresponding path program 1 times [2025-03-16 19:57:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479706298] [2025-03-16 19:57:06,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:06,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:06,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:06,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:06,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479706298] [2025-03-16 19:57:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479706298] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432530511] [2025-03-16 19:57:06,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:06,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:06,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:06,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 19:57:06,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 19:57:06,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 19:57:06,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:06,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:06,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:06,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 19:57:06,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:06,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432530511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:06,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572729057] [2025-03-16 19:57:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:06,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:06,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:06,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:06,278 INFO L87 Difference]: Start difference. First operand 19928 states and 30235 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:57:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:07,678 INFO L93 Difference]: Finished difference Result 54149 states and 81555 transitions. [2025-03-16 19:57:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:07,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2025-03-16 19:57:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:07,805 INFO L225 Difference]: With dead ends: 54149 [2025-03-16 19:57:07,806 INFO L226 Difference]: Without dead ends: 36353 [2025-03-16 19:57:07,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:07,842 INFO L435 NwaCegarLoop]: 4366 mSDtfsCounter, 184 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 8543 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:07,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 8543 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36353 states. [2025-03-16 19:57:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36353 to 36353. [2025-03-16 19:57:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36353 states, 31178 states have (on average 1.4953813586503304) internal successors, (46623), 31894 states have internal predecessors, (46623), 2831 states have call successors, (2831), 1703 states have call predecessors, (2831), 2342 states have return successors, (5130), 2771 states have call predecessors, (5130), 2829 states have call successors, (5130) [2025-03-16 19:57:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36353 states to 36353 states and 54584 transitions. [2025-03-16 19:57:09,278 INFO L78 Accepts]: Start accepts. Automaton has 36353 states and 54584 transitions. Word has length 116 [2025-03-16 19:57:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:09,280 INFO L471 AbstractCegarLoop]: Abstraction has 36353 states and 54584 transitions. [2025-03-16 19:57:09,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:57:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 36353 states and 54584 transitions. [2025-03-16 19:57:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-16 19:57:09,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:09,366 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 19:57:09,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:09,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:09,571 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:09,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2045656101, now seen corresponding path program 1 times [2025-03-16 19:57:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147414033] [2025-03-16 19:57:09,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:09,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:09,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:09,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:09,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-16 19:57:09,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:09,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147414033] [2025-03-16 19:57:09,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147414033] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:09,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156336675] [2025-03-16 19:57:09,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:09,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:09,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:09,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:09,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 19:57:09,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:09,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:09,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:09,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:09,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:09,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 19:57:09,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156336675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:09,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561902079] [2025-03-16 19:57:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:09,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:09,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:09,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:09,846 INFO L87 Difference]: Start difference. First operand 36353 states and 54584 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:11,460 INFO L93 Difference]: Finished difference Result 59347 states and 89189 transitions. [2025-03-16 19:57:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:11,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 167 [2025-03-16 19:57:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:11,610 INFO L225 Difference]: With dead ends: 59347 [2025-03-16 19:57:11,610 INFO L226 Difference]: Without dead ends: 32021 [2025-03-16 19:57:11,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:11,688 INFO L435 NwaCegarLoop]: 4175 mSDtfsCounter, 4112 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 4215 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:11,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 4215 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32021 states. [2025-03-16 19:57:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32021 to 24509. [2025-03-16 19:57:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24509 states, 21270 states have (on average 1.4617301363422661) internal successors, (31091), 21510 states have internal predecessors, (31091), 1851 states have call successors, (1851), 1195 states have call predecessors, (1851), 1386 states have return successors, (2610), 1811 states have call predecessors, (2610), 1849 states have call successors, (2610) [2025-03-16 19:57:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24509 states to 24509 states and 35552 transitions. [2025-03-16 19:57:12,879 INFO L78 Accepts]: Start accepts. Automaton has 24509 states and 35552 transitions. Word has length 167 [2025-03-16 19:57:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:12,880 INFO L471 AbstractCegarLoop]: Abstraction has 24509 states and 35552 transitions. [2025-03-16 19:57:12,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 24509 states and 35552 transitions. [2025-03-16 19:57:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-16 19:57:12,907 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:12,907 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 19:57:12,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:13,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 19:57:13,108 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:13,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 259824998, now seen corresponding path program 1 times [2025-03-16 19:57:13,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548665380] [2025-03-16 19:57:13,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:13,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:13,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:13,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:13,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 19:57:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548665380] [2025-03-16 19:57:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548665380] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519863921] [2025-03-16 19:57:13,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:13,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:13,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 19:57:13,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:13,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:13,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:13,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:13,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:13,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 19:57:13,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:13,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519863921] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:13,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:13,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:13,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896988325] [2025-03-16 19:57:13,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:13,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:13,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:13,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:13,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:13,349 INFO L87 Difference]: Start difference. First operand 24509 states and 35552 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:14,115 INFO L93 Difference]: Finished difference Result 49229 states and 71251 transitions. [2025-03-16 19:57:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:14,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 167 [2025-03-16 19:57:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:14,217 INFO L225 Difference]: With dead ends: 49229 [2025-03-16 19:57:14,217 INFO L226 Difference]: Without dead ends: 26859 [2025-03-16 19:57:14,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:14,264 INFO L435 NwaCegarLoop]: 4173 mSDtfsCounter, 4128 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:14,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 4212 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26859 states. [2025-03-16 19:57:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26859 to 26859. [2025-03-16 19:57:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26859 states, 23400 states have (on average 1.4241452991452992) internal successors, (33325), 23640 states have internal predecessors, (33325), 1917 states have call successors, (1917), 1349 states have call predecessors, (1917), 1540 states have return successors, (2698), 1877 states have call predecessors, (2698), 1915 states have call successors, (2698) [2025-03-16 19:57:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26859 states to 26859 states and 37940 transitions. [2025-03-16 19:57:15,301 INFO L78 Accepts]: Start accepts. Automaton has 26859 states and 37940 transitions. Word has length 167 [2025-03-16 19:57:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:15,302 INFO L471 AbstractCegarLoop]: Abstraction has 26859 states and 37940 transitions. [2025-03-16 19:57:15,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 26859 states and 37940 transitions. [2025-03-16 19:57:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-16 19:57:15,330 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:15,330 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 19:57:15,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:15,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:15,535 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:15,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:15,536 INFO L85 PathProgramCache]: Analyzing trace with hash -875111669, now seen corresponding path program 1 times [2025-03-16 19:57:15,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:15,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876615650] [2025-03-16 19:57:15,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:15,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:15,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:15,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:15,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 19:57:15,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876615650] [2025-03-16 19:57:15,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876615650] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540049246] [2025-03-16 19:57:15,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:15,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:15,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:15,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:15,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 19:57:15,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:15,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:15,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:15,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:15,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 19:57:15,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-16 19:57:15,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:15,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540049246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:15,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837130158] [2025-03-16 19:57:15,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:15,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:15,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:15,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:15,753 INFO L87 Difference]: Start difference. First operand 26859 states and 37940 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 19:57:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:16,914 INFO L93 Difference]: Finished difference Result 47804 states and 66488 transitions. [2025-03-16 19:57:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:16,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 167 [2025-03-16 19:57:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:17,036 INFO L225 Difference]: With dead ends: 47804 [2025-03-16 19:57:17,036 INFO L226 Difference]: Without dead ends: 28967 [2025-03-16 19:57:17,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:17,082 INFO L435 NwaCegarLoop]: 4230 mSDtfsCounter, 4106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:17,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4106 Valid, 4435 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28967 states. [2025-03-16 19:57:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28967 to 28835. [2025-03-16 19:57:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28835 states, 25200 states have (on average 1.3989285714285715) internal successors, (35253), 25440 states have internal predecessors, (35253), 1961 states have call successors, (1961), 1481 states have call predecessors, (1961), 1672 states have return successors, (2874), 1921 states have call predecessors, (2874), 1959 states have call successors, (2874) [2025-03-16 19:57:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28835 states to 28835 states and 40088 transitions. [2025-03-16 19:57:18,761 INFO L78 Accepts]: Start accepts. Automaton has 28835 states and 40088 transitions. Word has length 167 [2025-03-16 19:57:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:18,762 INFO L471 AbstractCegarLoop]: Abstraction has 28835 states and 40088 transitions. [2025-03-16 19:57:18,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 19:57:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 28835 states and 40088 transitions. [2025-03-16 19:57:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-16 19:57:18,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:18,796 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 19:57:18,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 19:57:19,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:19,000 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:19,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash 924180085, now seen corresponding path program 1 times [2025-03-16 19:57:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:19,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516203017] [2025-03-16 19:57:19,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:19,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:19,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 19:57:19,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 19:57:19,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:19,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 19:57:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516203017] [2025-03-16 19:57:19,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516203017] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292142829] [2025-03-16 19:57:19,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:19,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:19,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:19,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:19,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 19:57:19,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 19:57:19,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 19:57:19,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:19,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:19,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:19,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 19:57:19,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292142829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:19,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:19,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:19,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451972511] [2025-03-16 19:57:19,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:19,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:19,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:19,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:19,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:19,215 INFO L87 Difference]: Start difference. First operand 28835 states and 40088 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:20,684 INFO L93 Difference]: Finished difference Result 79043 states and 109418 transitions. [2025-03-16 19:57:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:20,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 168 [2025-03-16 19:57:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:20,887 INFO L225 Difference]: With dead ends: 79043 [2025-03-16 19:57:20,887 INFO L226 Difference]: Without dead ends: 52347 [2025-03-16 19:57:20,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:20,957 INFO L435 NwaCegarLoop]: 4366 mSDtfsCounter, 178 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 8534 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:20,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 8534 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:21,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52347 states. [2025-03-16 19:57:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52347 to 52343. [2025-03-16 19:57:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52343 states, 45398 states have (on average 1.3740473148596855) internal successors, (62379), 45876 states have internal predecessors, (62379), 3759 states have call successors, (3759), 2801 states have call predecessors, (3759), 3184 states have return successors, (6658), 3681 states have call predecessors, (6658), 3757 states have call successors, (6658) [2025-03-16 19:57:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52343 states to 52343 states and 72796 transitions. [2025-03-16 19:57:23,074 INFO L78 Accepts]: Start accepts. Automaton has 52343 states and 72796 transitions. Word has length 168 [2025-03-16 19:57:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:23,075 INFO L471 AbstractCegarLoop]: Abstraction has 52343 states and 72796 transitions. [2025-03-16 19:57:23,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 52343 states and 72796 transitions. [2025-03-16 19:57:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-16 19:57:23,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:23,151 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:23,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:23,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 19:57:23,352 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:23,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:23,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1147957032, now seen corresponding path program 1 times [2025-03-16 19:57:23,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:23,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129196659] [2025-03-16 19:57:23,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:23,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-16 19:57:23,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-16 19:57:23,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:23,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-16 19:57:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129196659] [2025-03-16 19:57:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129196659] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333654043] [2025-03-16 19:57:23,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:23,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:23,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:23,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 19:57:23,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-16 19:57:23,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-16 19:57:23,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:23,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:23,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:23,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 19:57:23,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333654043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94553571] [2025-03-16 19:57:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:23,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:23,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:23,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:23,578 INFO L87 Difference]: Start difference. First operand 52343 states and 72796 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:25,640 INFO L93 Difference]: Finished difference Result 105963 states and 148667 transitions. [2025-03-16 19:57:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 169 [2025-03-16 19:57:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:25,833 INFO L225 Difference]: With dead ends: 105963 [2025-03-16 19:57:25,833 INFO L226 Difference]: Without dead ends: 55767 [2025-03-16 19:57:25,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:25,933 INFO L435 NwaCegarLoop]: 4181 mSDtfsCounter, 4136 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:25,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4219 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55767 states. [2025-03-16 19:57:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55767 to 52343. [2025-03-16 19:57:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52343 states, 45398 states have (on average 1.3483193092206704) internal successors, (61211), 45876 states have internal predecessors, (61211), 3759 states have call successors, (3759), 2801 states have call predecessors, (3759), 3184 states have return successors, (6262), 3681 states have call predecessors, (6262), 3757 states have call successors, (6262) [2025-03-16 19:57:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52343 states to 52343 states and 71232 transitions. [2025-03-16 19:57:28,744 INFO L78 Accepts]: Start accepts. Automaton has 52343 states and 71232 transitions. Word has length 169 [2025-03-16 19:57:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:28,745 INFO L471 AbstractCegarLoop]: Abstraction has 52343 states and 71232 transitions. [2025-03-16 19:57:28,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52343 states and 71232 transitions. [2025-03-16 19:57:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-16 19:57:28,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:28,798 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-16 19:57:28,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:28,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 19:57:28,998 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:28,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 184964474, now seen corresponding path program 1 times [2025-03-16 19:57:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233874539] [2025-03-16 19:57:28,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:29,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-16 19:57:29,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-16 19:57:29,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:29,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-16 19:57:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233874539] [2025-03-16 19:57:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233874539] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387228064] [2025-03-16 19:57:29,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:29,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:29,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 19:57:29,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-16 19:57:29,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-16 19:57:29,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:29,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:29,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:29,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-16 19:57:29,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387228064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:29,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:29,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526748189] [2025-03-16 19:57:29,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:29,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:29,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:29,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:29,186 INFO L87 Difference]: Start difference. First operand 52343 states and 71232 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:32,426 INFO L93 Difference]: Finished difference Result 150115 states and 204604 transitions. [2025-03-16 19:57:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:32,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 169 [2025-03-16 19:57:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:32,745 INFO L225 Difference]: With dead ends: 150115 [2025-03-16 19:57:32,745 INFO L226 Difference]: Without dead ends: 99919 [2025-03-16 19:57:32,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:32,845 INFO L435 NwaCegarLoop]: 4368 mSDtfsCounter, 188 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 8537 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:32,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 8537 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:57:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99919 states. [2025-03-16 19:57:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99919 to 99915. [2025-03-16 19:57:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99915 states, 86558 states have (on average 1.3278379814690728) internal successors, (114935), 87512 states have internal predecessors, (114935), 7163 states have call successors, (7163), 5425 states have call predecessors, (7163), 6192 states have return successors, (14236), 7009 states have call predecessors, (14236), 7161 states have call successors, (14236)