./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.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 9e8eec1743df688e821561fda517f1945d9b8e3e5029879578d4191f60280f1b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:49:06,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:49:06,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:49:06,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:49:06,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:49:06,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:49:06,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:49:06,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:49:06,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:49:06,213 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:49:06,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:49:06,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:49:06,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:49:06,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:49:06,215 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:49:06,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:49:06,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:49:06,215 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:49:06,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:49:06,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:49:06,216 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:49:06,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:49:06,216 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:49:06,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:49:06,217 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 -> 9e8eec1743df688e821561fda517f1945d9b8e3e5029879578d4191f60280f1b [2025-03-08 06:49:06,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:49:06,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:49:06,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:49:06,443 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:49:06,443 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:49:06,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-1.c [2025-03-08 06:49:07,564 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fb76aa0/bda1d52db61b4b6d8ca75a0034cf7928/FLAG97597e472 [2025-03-08 06:49:08,005 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:49:08,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-1.c [2025-03-08 06:49:08,052 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fb76aa0/bda1d52db61b4b6d8ca75a0034cf7928/FLAG97597e472 [2025-03-08 06:49:08,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fb76aa0/bda1d52db61b4b6d8ca75a0034cf7928 [2025-03-08 06:49:08,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:49:08,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:49:08,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:49:08,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:49:08,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:49:08,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:49:08" (1/1) ... [2025-03-08 06:49:08,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54316e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:08, skipping insertion in model container [2025-03-08 06:49:08,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:49:08" (1/1) ... [2025-03-08 06:49:08,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:49:09,366 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.04.cil-1.c[378560,378573] [2025-03-08 06:49:09,400 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.04.cil-1.c[383339,383352] [2025-03-08 06:49:09,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:49:09,620 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:49:10,126 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.04.cil-1.c[378560,378573] [2025-03-08 06:49:10,132 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.04.cil-1.c[383339,383352] [2025-03-08 06:49:10,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:49:10,193 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:49:10,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10 WrapperNode [2025-03-08 06:49:10,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:49:10,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:49:10,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:49:10,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:49:10,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,490 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12729 [2025-03-08 06:49:10,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:49:10,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:49:10,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:49:10,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:49:10,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,610 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:49:10,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,859 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:49:10,949 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:49:10,949 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:49:10,949 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:49:10,950 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (1/1) ... [2025-03-08 06:49:10,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:49:10,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:49:10,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:49:10,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:49:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:49:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:49:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:49:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:49:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:49:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:49:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:49:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:49:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:49:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:49:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:49:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:49:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:49:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:49:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:49:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:49:11,093 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:49:11,094 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:49:16,941 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:49:16,942 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:49:16,943 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:49:16,943 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:49:16,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:49:16,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:49:16,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:49:17,117 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2025-03-08 06:49:17,118 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:49:17,162 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:49:17,162 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:49:17,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:49:17 BoogieIcfgContainer [2025-03-08 06:49:17,162 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:49:17,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:49:17,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:49:17,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:49:17,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:49:08" (1/3) ... [2025-03-08 06:49:17,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1203159e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:49:17, skipping insertion in model container [2025-03-08 06:49:17,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:49:10" (2/3) ... [2025-03-08 06:49:17,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1203159e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:49:17, skipping insertion in model container [2025-03-08 06:49:17,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:49:17" (3/3) ... [2025-03-08 06:49:17,170 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.04.cil-1.c [2025-03-08 06:49:17,182 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:49:17,185 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.04.cil-1.c that has 7 procedures, 2363 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2025-03-08 06:49:17,264 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:49:17,272 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;@6d70c27a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:49:17,274 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:49:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 2363 states, 2337 states have (on average 1.85066324347454) internal successors, (4325), 2339 states have internal predecessors, (4325), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-08 06:49:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:17,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:17,295 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:17,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:17,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1871579824, now seen corresponding path program 1 times [2025-03-08 06:49:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:17,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683143916] [2025-03-08 06:49:17,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:17,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:17,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:17,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:17,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:17,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683143916] [2025-03-08 06:49:17,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683143916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:17,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:17,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470880552] [2025-03-08 06:49:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:17,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:17,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:17,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:17,711 INFO L87 Difference]: Start difference. First operand has 2363 states, 2337 states have (on average 1.85066324347454) internal successors, (4325), 2339 states have internal predecessors, (4325), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:18,145 INFO L93 Difference]: Finished difference Result 4896 states and 8993 transitions. [2025-03-08 06:49:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:49:18,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:18,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:18,163 INFO L225 Difference]: With dead ends: 4896 [2025-03-08 06:49:18,163 INFO L226 Difference]: Without dead ends: 2475 [2025-03-08 06:49:18,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:18,178 INFO L435 NwaCegarLoop]: 4232 mSDtfsCounter, 4494 mSDsluCounter, 8563 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 12795 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:18,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4506 Valid, 12795 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:49:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2025-03-08 06:49:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2462. [2025-03-08 06:49:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2416 states have (on average 1.8265728476821192) internal successors, (4413), 2419 states have internal predecessors, (4413), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 06:49:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4476 transitions. [2025-03-08 06:49:18,292 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4476 transitions. Word has length 88 [2025-03-08 06:49:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:18,292 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 4476 transitions. [2025-03-08 06:49:18,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4476 transitions. [2025-03-08 06:49:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:18,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:18,297 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:18,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:49:18,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:18,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1865487086, now seen corresponding path program 1 times [2025-03-08 06:49:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093101231] [2025-03-08 06:49:18,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:18,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:18,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:18,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:18,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:18,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093101231] [2025-03-08 06:49:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093101231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077225079] [2025-03-08 06:49:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:18,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:18,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:18,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:18,441 INFO L87 Difference]: Start difference. First operand 2462 states and 4476 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:18,683 INFO L93 Difference]: Finished difference Result 2821 states and 5033 transitions. [2025-03-08 06:49:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:49:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:18,695 INFO L225 Difference]: With dead ends: 2821 [2025-03-08 06:49:18,695 INFO L226 Difference]: Without dead ends: 2492 [2025-03-08 06:49:18,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:18,697 INFO L435 NwaCegarLoop]: 4151 mSDtfsCounter, 4297 mSDsluCounter, 8227 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 12378 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:18,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 12378 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:49:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2025-03-08 06:49:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2462. [2025-03-08 06:49:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2416 states have (on average 1.8257450331125828) internal successors, (4411), 2419 states have internal predecessors, (4411), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 06:49:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4474 transitions. [2025-03-08 06:49:18,762 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4474 transitions. Word has length 88 [2025-03-08 06:49:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:18,762 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 4474 transitions. [2025-03-08 06:49:18,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4474 transitions. [2025-03-08 06:49:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:18,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:18,764 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:18,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:49:18,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:18,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 320446961, now seen corresponding path program 1 times [2025-03-08 06:49:18,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:18,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255904800] [2025-03-08 06:49:18,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:18,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:18,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:18,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:18,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255904800] [2025-03-08 06:49:18,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255904800] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:18,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:18,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:49:18,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994313406] [2025-03-08 06:49:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:18,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:49:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:18,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:49:18,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:18,936 INFO L87 Difference]: Start difference. First operand 2462 states and 4474 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:19,391 INFO L93 Difference]: Finished difference Result 2994 states and 5288 transitions. [2025-03-08 06:49:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:49:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:19,400 INFO L225 Difference]: With dead ends: 2994 [2025-03-08 06:49:19,400 INFO L226 Difference]: Without dead ends: 2665 [2025-03-08 06:49:19,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:49:19,402 INFO L435 NwaCegarLoop]: 4288 mSDtfsCounter, 4413 mSDsluCounter, 12847 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4425 SdHoareTripleChecker+Valid, 17135 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:19,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4425 Valid, 17135 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:49:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2025-03-08 06:49:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2616. [2025-03-08 06:49:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2550 states have (on average 1.8086274509803921) internal successors, (4612), 2554 states have internal predecessors, (4612), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2025-03-08 06:49:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 4704 transitions. [2025-03-08 06:49:19,460 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 4704 transitions. Word has length 88 [2025-03-08 06:49:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:19,460 INFO L471 AbstractCegarLoop]: Abstraction has 2616 states and 4704 transitions. [2025-03-08 06:49:19,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 4704 transitions. [2025-03-08 06:49:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:19,463 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:19,463 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:19,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:49:19,463 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:19,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash -163228366, now seen corresponding path program 1 times [2025-03-08 06:49:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391637875] [2025-03-08 06:49:19,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:19,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:19,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:19,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:19,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:19,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:19,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391637875] [2025-03-08 06:49:19,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391637875] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:19,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:19,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:49:19,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523432115] [2025-03-08 06:49:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:19,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:49:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:19,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:49:19,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:19,589 INFO L87 Difference]: Start difference. First operand 2616 states and 4704 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:19,992 INFO L93 Difference]: Finished difference Result 3475 states and 6015 transitions. [2025-03-08 06:49:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:49:19,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:20,005 INFO L225 Difference]: With dead ends: 3475 [2025-03-08 06:49:20,005 INFO L226 Difference]: Without dead ends: 2992 [2025-03-08 06:49:20,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:49:20,009 INFO L435 NwaCegarLoop]: 4284 mSDtfsCounter, 4408 mSDsluCounter, 12835 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 17119 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:20,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 17119 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:49:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2025-03-08 06:49:20,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2939. [2025-03-08 06:49:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2831 states have (on average 1.7792299540798304) internal successors, (5037), 2839 states have internal predecessors, (5037), 70 states have call successors, (70), 30 states have call predecessors, (70), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2025-03-08 06:49:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5193 transitions. [2025-03-08 06:49:20,092 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5193 transitions. Word has length 88 [2025-03-08 06:49:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:20,093 INFO L471 AbstractCegarLoop]: Abstraction has 2939 states and 5193 transitions. [2025-03-08 06:49:20,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5193 transitions. [2025-03-08 06:49:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:20,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:20,095 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:20,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:49:20,095 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:20,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash 791000529, now seen corresponding path program 1 times [2025-03-08 06:49:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276633996] [2025-03-08 06:49:20,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:20,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:20,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:20,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:20,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:20,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:20,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276633996] [2025-03-08 06:49:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276633996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:49:20,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008908995] [2025-03-08 06:49:20,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:20,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:49:20,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:20,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:49:20,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:20,203 INFO L87 Difference]: Start difference. First operand 2939 states and 5193 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:20,632 INFO L93 Difference]: Finished difference Result 4492 states and 7582 transitions. [2025-03-08 06:49:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:49:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:20,648 INFO L225 Difference]: With dead ends: 4492 [2025-03-08 06:49:20,648 INFO L226 Difference]: Without dead ends: 3686 [2025-03-08 06:49:20,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:49:20,653 INFO L435 NwaCegarLoop]: 4281 mSDtfsCounter, 4403 mSDsluCounter, 12826 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 17107 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:20,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4415 Valid, 17107 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:49:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2025-03-08 06:49:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3624. [2025-03-08 06:49:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3426 states have (on average 1.7352597781669585) internal successors, (5945), 3448 states have internal predecessors, (5945), 122 states have call successors, (122), 54 states have call predecessors, (122), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2025-03-08 06:49:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 6253 transitions. [2025-03-08 06:49:20,772 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 6253 transitions. Word has length 88 [2025-03-08 06:49:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:20,773 INFO L471 AbstractCegarLoop]: Abstraction has 3624 states and 6253 transitions. [2025-03-08 06:49:20,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 6253 transitions. [2025-03-08 06:49:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:20,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:20,775 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:20,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:49:20,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:20,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:20,776 INFO L85 PathProgramCache]: Analyzing trace with hash 544687442, now seen corresponding path program 1 times [2025-03-08 06:49:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931452142] [2025-03-08 06:49:20,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:20,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:20,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:20,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:20,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931452142] [2025-03-08 06:49:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931452142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:49:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410889650] [2025-03-08 06:49:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:20,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:49:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:20,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:49:20,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:20,877 INFO L87 Difference]: Start difference. First operand 3624 states and 6253 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:21,426 INFO L93 Difference]: Finished difference Result 6927 states and 11425 transitions. [2025-03-08 06:49:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:49:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:21,450 INFO L225 Difference]: With dead ends: 6927 [2025-03-08 06:49:21,450 INFO L226 Difference]: Without dead ends: 5436 [2025-03-08 06:49:21,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:49:21,458 INFO L435 NwaCegarLoop]: 4276 mSDtfsCounter, 4532 mSDsluCounter, 12806 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:21,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4549 Valid, 17082 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:49:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2025-03-08 06:49:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5069. [2025-03-08 06:49:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 4681 states have (on average 1.6844691305276651) internal successors, (7885), 4749 states have internal predecessors, (7885), 218 states have call successors, (218), 102 states have call predecessors, (218), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-08 06:49:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 8577 transitions. [2025-03-08 06:49:21,669 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 8577 transitions. Word has length 88 [2025-03-08 06:49:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:21,669 INFO L471 AbstractCegarLoop]: Abstraction has 5069 states and 8577 transitions. [2025-03-08 06:49:21,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 8577 transitions. [2025-03-08 06:49:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:21,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:21,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:21,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:49:21,673 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:21,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1125826127, now seen corresponding path program 1 times [2025-03-08 06:49:21,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:21,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57313818] [2025-03-08 06:49:21,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:21,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:21,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:21,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:21,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:21,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:21,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57313818] [2025-03-08 06:49:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57313818] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:21,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:21,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:21,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390886382] [2025-03-08 06:49:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:21,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:21,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:21,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:21,747 INFO L87 Difference]: Start difference. First operand 5069 states and 8577 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:22,014 INFO L93 Difference]: Finished difference Result 8420 states and 14050 transitions. [2025-03-08 06:49:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:49:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:22,047 INFO L225 Difference]: With dead ends: 8420 [2025-03-08 06:49:22,047 INFO L226 Difference]: Without dead ends: 5484 [2025-03-08 06:49:22,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:22,061 INFO L435 NwaCegarLoop]: 4131 mSDtfsCounter, 4295 mSDsluCounter, 8195 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 12326 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:22,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 12326 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:49:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2025-03-08 06:49:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5069. [2025-03-08 06:49:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 4681 states have (on average 1.6808374279000213) internal successors, (7868), 4749 states have internal predecessors, (7868), 218 states have call successors, (218), 102 states have call predecessors, (218), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-08 06:49:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 8560 transitions. [2025-03-08 06:49:22,231 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 8560 transitions. Word has length 88 [2025-03-08 06:49:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:22,232 INFO L471 AbstractCegarLoop]: Abstraction has 5069 states and 8560 transitions. [2025-03-08 06:49:22,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 8560 transitions. [2025-03-08 06:49:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:22,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:22,237 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:22,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:49:22,238 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:22,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1733902990, now seen corresponding path program 1 times [2025-03-08 06:49:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604004381] [2025-03-08 06:49:22,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:22,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:22,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:22,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:22,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604004381] [2025-03-08 06:49:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604004381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:22,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:22,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:49:22,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895008448] [2025-03-08 06:49:22,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:22,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:49:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:22,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:49:22,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:22,325 INFO L87 Difference]: Start difference. First operand 5069 states and 8560 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:22,919 INFO L93 Difference]: Finished difference Result 11474 states and 18968 transitions. [2025-03-08 06:49:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:49:22,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:22,948 INFO L225 Difference]: With dead ends: 11474 [2025-03-08 06:49:22,949 INFO L226 Difference]: Without dead ends: 8538 [2025-03-08 06:49:22,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:49:22,962 INFO L435 NwaCegarLoop]: 4268 mSDtfsCounter, 4459 mSDsluCounter, 12783 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 17051 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:22,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 17051 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:49:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2025-03-08 06:49:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 8097. [2025-03-08 06:49:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8097 states, 7283 states have (on average 1.6298228751887958) internal successors, (11870), 7497 states have internal predecessors, (11870), 402 states have call successors, (402), 198 states have call predecessors, (402), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:49:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 13698 transitions. [2025-03-08 06:49:23,244 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 13698 transitions. Word has length 88 [2025-03-08 06:49:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:23,244 INFO L471 AbstractCegarLoop]: Abstraction has 8097 states and 13698 transitions. [2025-03-08 06:49:23,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 13698 transitions. [2025-03-08 06:49:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:23,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:23,250 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:23,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:49:23,250 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:23,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash 47596945, now seen corresponding path program 1 times [2025-03-08 06:49:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:23,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804340736] [2025-03-08 06:49:23,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:23,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:23,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:23,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:23,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:23,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804340736] [2025-03-08 06:49:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804340736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:23,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640836498] [2025-03-08 06:49:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:23,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:23,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:23,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:23,306 INFO L87 Difference]: Start difference. First operand 8097 states and 13698 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:23,717 INFO L93 Difference]: Finished difference Result 14796 states and 25246 transitions. [2025-03-08 06:49:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:49:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:23,744 INFO L225 Difference]: With dead ends: 14796 [2025-03-08 06:49:23,744 INFO L226 Difference]: Without dead ends: 8832 [2025-03-08 06:49:23,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:23,761 INFO L435 NwaCegarLoop]: 4135 mSDtfsCounter, 4284 mSDsluCounter, 8195 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4296 SdHoareTripleChecker+Valid, 12330 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:23,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4296 Valid, 12330 Invalid, 249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:49:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2025-03-08 06:49:24,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 8097. [2025-03-08 06:49:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8097 states, 7283 states have (on average 1.6252917753672937) internal successors, (11837), 7497 states have internal predecessors, (11837), 402 states have call successors, (402), 198 states have call predecessors, (402), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:49:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 13665 transitions. [2025-03-08 06:49:24,042 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 13665 transitions. Word has length 88 [2025-03-08 06:49:24,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:24,042 INFO L471 AbstractCegarLoop]: Abstraction has 8097 states and 13665 transitions. [2025-03-08 06:49:24,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 13665 transitions. [2025-03-08 06:49:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:24,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:24,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:24,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:49:24,046 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:24,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1351990674, now seen corresponding path program 1 times [2025-03-08 06:49:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66392856] [2025-03-08 06:49:24,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:24,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:24,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:24,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:24,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:24,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66392856] [2025-03-08 06:49:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66392856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:24,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785075888] [2025-03-08 06:49:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:24,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:24,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:24,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:24,102 INFO L87 Difference]: Start difference. First operand 8097 states and 13665 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:24,507 INFO L93 Difference]: Finished difference Result 14551 states and 24690 transitions. [2025-03-08 06:49:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:49:24,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:24,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:24,535 INFO L225 Difference]: With dead ends: 14551 [2025-03-08 06:49:24,535 INFO L226 Difference]: Without dead ends: 8587 [2025-03-08 06:49:24,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:24,550 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 4281 mSDsluCounter, 8190 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 12322 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:24,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4293 Valid, 12322 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:49:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2025-03-08 06:49:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8097. [2025-03-08 06:49:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8097 states, 7283 states have (on average 1.6207606755457915) internal successors, (11804), 7497 states have internal predecessors, (11804), 402 states have call successors, (402), 198 states have call predecessors, (402), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:49:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 13632 transitions. [2025-03-08 06:49:24,842 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 13632 transitions. Word has length 88 [2025-03-08 06:49:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:24,843 INFO L471 AbstractCegarLoop]: Abstraction has 8097 states and 13632 transitions. [2025-03-08 06:49:24,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 13632 transitions. [2025-03-08 06:49:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:49:24,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:24,847 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:24,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:49:24,847 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:24,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -822689423, now seen corresponding path program 1 times [2025-03-08 06:49:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423008430] [2025-03-08 06:49:24,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:24,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:49:24,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:49:24,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:24,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:24,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:24,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423008430] [2025-03-08 06:49:24,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423008430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:24,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:24,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:49:24,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314437030] [2025-03-08 06:49:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:24,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:49:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:24,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:49:24,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:49:24,898 INFO L87 Difference]: Start difference. First operand 8097 states and 13632 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:25,653 INFO L93 Difference]: Finished difference Result 19888 states and 33074 transitions. [2025-03-08 06:49:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:49:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2025-03-08 06:49:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:25,707 INFO L225 Difference]: With dead ends: 19888 [2025-03-08 06:49:25,708 INFO L226 Difference]: Without dead ends: 13925 [2025-03-08 06:49:25,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:49:25,734 INFO L435 NwaCegarLoop]: 4439 mSDtfsCounter, 4399 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4399 SdHoareTripleChecker+Valid, 8811 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:25,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4399 Valid, 8811 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:49:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13925 states. [2025-03-08 06:49:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13925 to 13892. [2025-03-08 06:49:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13892 states, 12270 states have (on average 1.56519967400163) internal successors, (19205), 12729 states have internal predecessors, (19205), 800 states have call successors, (800), 396 states have call predecessors, (800), 820 states have return successors, (2817), 798 states have call predecessors, (2817), 800 states have call successors, (2817) [2025-03-08 06:49:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13892 states to 13892 states and 22822 transitions. [2025-03-08 06:49:26,340 INFO L78 Accepts]: Start accepts. Automaton has 13892 states and 22822 transitions. Word has length 88 [2025-03-08 06:49:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:26,342 INFO L471 AbstractCegarLoop]: Abstraction has 13892 states and 22822 transitions. [2025-03-08 06:49:26,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13892 states and 22822 transitions. [2025-03-08 06:49:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 06:49:26,361 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:26,361 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:26,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:49:26,362 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:26,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash -846010141, now seen corresponding path program 1 times [2025-03-08 06:49:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126210068] [2025-03-08 06:49:26,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:26,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:26,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:26,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:26,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:26,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:49:26,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126210068] [2025-03-08 06:49:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126210068] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:49:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391239233] [2025-03-08 06:49:26,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:26,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:49:26,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:49:26,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:49:26,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:49:26,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:26,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:26,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:26,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:26,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:49:26,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:49:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 06:49:26,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:49:26,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391239233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:26,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:49:26,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:49:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359707499] [2025-03-08 06:49:26,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:26,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:49:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:26,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:49:26,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:26,612 INFO L87 Difference]: Start difference. First operand 13892 states and 22822 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:27,298 INFO L93 Difference]: Finished difference Result 37077 states and 60348 transitions. [2025-03-08 06:49:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:49:27,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 143 [2025-03-08 06:49:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:27,379 INFO L225 Difference]: With dead ends: 37077 [2025-03-08 06:49:27,379 INFO L226 Difference]: Without dead ends: 25319 [2025-03-08 06:49:27,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:27,405 INFO L435 NwaCegarLoop]: 4214 mSDtfsCounter, 4167 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:27,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 4444 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:49:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25319 states. [2025-03-08 06:49:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25319 to 25251. [2025-03-08 06:49:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25251 states, 22079 states have (on average 1.5357579600525386) internal successors, (33908), 22995 states have internal predecessors, (33908), 1530 states have call successors, (1530), 792 states have call predecessors, (1530), 1640 states have return successors, (5533), 1495 states have call predecessors, (5533), 1530 states have call successors, (5533) [2025-03-08 06:49:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25251 states to 25251 states and 40971 transitions. [2025-03-08 06:49:28,409 INFO L78 Accepts]: Start accepts. Automaton has 25251 states and 40971 transitions. Word has length 143 [2025-03-08 06:49:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:28,410 INFO L471 AbstractCegarLoop]: Abstraction has 25251 states and 40971 transitions. [2025-03-08 06:49:28,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25251 states and 40971 transitions. [2025-03-08 06:49:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 06:49:28,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:28,436 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:28,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:49:28,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 06:49:28,637 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:28,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -771795555, now seen corresponding path program 1 times [2025-03-08 06:49:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550206728] [2025-03-08 06:49:28,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:28,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:28,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:28,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:28,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:49:28,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:28,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550206728] [2025-03-08 06:49:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550206728] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:49:28,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168825709] [2025-03-08 06:49:28,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:28,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:49:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:49:28,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:49:28,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:49:28,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:28,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:28,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:28,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:28,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:49:28,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:49:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:49:28,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:49:28,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168825709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:28,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:49:28,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:49:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792806557] [2025-03-08 06:49:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:28,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:49:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:28,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:49:28,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:28,869 INFO L87 Difference]: Start difference. First operand 25251 states and 40971 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:31,083 INFO L93 Difference]: Finished difference Result 70824 states and 114601 transitions. [2025-03-08 06:49:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:49:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 143 [2025-03-08 06:49:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:31,240 INFO L225 Difference]: With dead ends: 70824 [2025-03-08 06:49:31,241 INFO L226 Difference]: Without dead ends: 47707 [2025-03-08 06:49:31,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:31,291 INFO L435 NwaCegarLoop]: 4214 mSDtfsCounter, 4161 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:31,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4161 Valid, 4444 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:49:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47707 states. [2025-03-08 06:49:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47707 to 47573. [2025-03-08 06:49:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47573 states, 41367 states have (on average 1.517779872845505) internal successors, (62786), 43197 states have internal predecessors, (62786), 2924 states have call successors, (2924), 1584 states have call predecessors, (2924), 3280 states have return successors, (10899), 2823 states have call predecessors, (10899), 2924 states have call successors, (10899) [2025-03-08 06:49:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47573 states to 47573 states and 76609 transitions. [2025-03-08 06:49:33,256 INFO L78 Accepts]: Start accepts. Automaton has 47573 states and 76609 transitions. Word has length 143 [2025-03-08 06:49:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:33,256 INFO L471 AbstractCegarLoop]: Abstraction has 47573 states and 76609 transitions. [2025-03-08 06:49:33,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 47573 states and 76609 transitions. [2025-03-08 06:49:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 06:49:33,298 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:33,298 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:33,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 06:49:33,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 06:49:33,503 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:33,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 142759383, now seen corresponding path program 1 times [2025-03-08 06:49:33,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:33,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694462991] [2025-03-08 06:49:33,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:33,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:33,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:33,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:33,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:49:33,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694462991] [2025-03-08 06:49:33,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694462991] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:49:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503902091] [2025-03-08 06:49:33,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:33,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:49:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:49:33,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:49:33,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:49:33,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:33,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:33,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:33,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:33,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:49:33,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:49:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 06:49:33,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:49:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503902091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:49:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:49:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781421086] [2025-03-08 06:49:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:33,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:49:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:33,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:49:33,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:33,715 INFO L87 Difference]: Start difference. First operand 47573 states and 76609 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:37,683 INFO L93 Difference]: Finished difference Result 137514 states and 221701 transitions. [2025-03-08 06:49:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:49:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 143 [2025-03-08 06:49:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:38,015 INFO L225 Difference]: With dead ends: 137514 [2025-03-08 06:49:38,016 INFO L226 Difference]: Without dead ends: 92075 [2025-03-08 06:49:38,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:38,136 INFO L435 NwaCegarLoop]: 4214 mSDtfsCounter, 4173 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:38,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4444 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:49:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92075 states. [2025-03-08 06:49:42,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92075 to 91809. [2025-03-08 06:49:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91809 states, 79539 states have (on average 1.5054501565269867) internal successors, (119742), 83197 states have internal predecessors, (119742), 5708 states have call successors, (5708), 3168 states have call predecessors, (5708), 6560 states have return successors, (21627), 5475 states have call predecessors, (21627), 5708 states have call successors, (21627) [2025-03-08 06:49:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91809 states to 91809 states and 147077 transitions. [2025-03-08 06:49:42,805 INFO L78 Accepts]: Start accepts. Automaton has 91809 states and 147077 transitions. Word has length 143 [2025-03-08 06:49:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:42,806 INFO L471 AbstractCegarLoop]: Abstraction has 91809 states and 147077 transitions. [2025-03-08 06:49:42,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 91809 states and 147077 transitions. [2025-03-08 06:49:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 06:49:42,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:42,896 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:49:42,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 06:49:43,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:49:43,101 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:43,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1674260719, now seen corresponding path program 1 times [2025-03-08 06:49:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:43,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599256571] [2025-03-08 06:49:43,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:43,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:43,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:43,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:43,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:49:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599256571] [2025-03-08 06:49:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599256571] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:49:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689417955] [2025-03-08 06:49:43,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:43,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:49:43,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:49:43,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:49:43,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 06:49:43,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:49:43,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:49:43,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:43,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:43,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:49:43,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:49:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 06:49:43,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:49:43,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689417955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:43,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:49:43,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:49:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131729125] [2025-03-08 06:49:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:43,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:49:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:43,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:49:43,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:43,368 INFO L87 Difference]: Start difference. First operand 91809 states and 147077 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:49:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:49,610 INFO L93 Difference]: Finished difference Result 269286 states and 432833 transitions. [2025-03-08 06:49:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:49:49,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 143 [2025-03-08 06:49:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:50,693 INFO L225 Difference]: With dead ends: 269286 [2025-03-08 06:49:50,693 INFO L226 Difference]: Without dead ends: 179611 [2025-03-08 06:49:50,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:50,930 INFO L435 NwaCegarLoop]: 4214 mSDtfsCounter, 4155 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:50,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4155 Valid, 4444 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:49:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179611 states. [2025-03-08 06:49:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179611 to 179081. [2025-03-08 06:49:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179081 states, 154819 states have (on average 1.4972193335443325) internal successors, (231798), 162133 states have internal predecessors, (231798), 11140 states have call successors, (11140), 6336 states have call predecessors, (11140), 13120 states have return successors, (42947), 10643 states have call predecessors, (42947), 11140 states have call successors, (42947) [2025-03-08 06:49:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179081 states to 179081 states and 285885 transitions. [2025-03-08 06:50:00,054 INFO L78 Accepts]: Start accepts. Automaton has 179081 states and 285885 transitions. Word has length 143 [2025-03-08 06:50:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:50:00,058 INFO L471 AbstractCegarLoop]: Abstraction has 179081 states and 285885 transitions. [2025-03-08 06:50:00,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:50:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 179081 states and 285885 transitions. [2025-03-08 06:50:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 06:50:00,316 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:50:00,316 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:50:00,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 06:50:00,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 06:50:00,521 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:50:00,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:50:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1339882805, now seen corresponding path program 1 times [2025-03-08 06:50:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:50:00,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325824476] [2025-03-08 06:50:00,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:50:00,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:50:00,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:50:00,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:50:00,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:50:00,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:50:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:50:00,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:50:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325824476] [2025-03-08 06:50:00,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325824476] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:50:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667480995] [2025-03-08 06:50:00,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:50:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:50:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:50:00,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:50:00,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 06:50:00,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 06:50:00,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 06:50:00,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:50:00,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:50:00,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:50:00,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:50:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 06:50:00,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:50:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667480995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:50:00,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:50:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:50:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291281426] [2025-03-08 06:50:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:50:00,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:50:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:50:00,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:50:00,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:50:00,818 INFO L87 Difference]: Start difference. First operand 179081 states and 285885 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:50:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:50:14,955 INFO L93 Difference]: Finished difference Result 525677 states and 846501 transitions. [2025-03-08 06:50:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:50:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 143 [2025-03-08 06:50:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:50:16,561 INFO L225 Difference]: With dead ends: 525677 [2025-03-08 06:50:16,561 INFO L226 Difference]: Without dead ends: 348731 [2025-03-08 06:50:17,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:50:17,084 INFO L435 NwaCegarLoop]: 4447 mSDtfsCounter, 229 mSDsluCounter, 4213 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 8660 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:50:17,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 8660 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:50:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348731 states.