./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:06:26,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:06:26,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:06:26,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:06:26,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:06:26,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:06:26,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:06:26,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:06:26,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:06:26,282 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:06:26,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:06:26,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:06:26,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:06:26,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:06:26,282 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:06:26,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:06:26,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:06:26,283 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:06:26,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:26,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:06:26,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:06:26,284 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 -> 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 [2025-03-16 20:06:26,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:06:26,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:06:26,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:06:26,531 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:06:26,531 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:06:26,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2025-03-16 20:06:27,742 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbe894a6/f135f0e7a84c4fde8541a41cc4eac889/FLAG95de4c052 [2025-03-16 20:06:28,387 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:06:28,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2025-03-16 20:06:28,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbe894a6/f135f0e7a84c4fde8541a41cc4eac889/FLAG95de4c052 [2025-03-16 20:06:28,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbe894a6/f135f0e7a84c4fde8541a41cc4eac889 [2025-03-16 20:06:28,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:06:28,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:06:28,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:28,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:06:28,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:06:28,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:28" (1/1) ... [2025-03-16 20:06:28,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d41fce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:28, skipping insertion in model container [2025-03-16 20:06:28,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:28" (1/1) ... [2025-03-16 20:06:28,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:06:30,038 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2025-03-16 20:06:30,065 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2025-03-16 20:06:30,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:30,268 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:06:30,760 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2025-03-16 20:06:30,767 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2025-03-16 20:06:30,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:30,823 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:06:30,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30 WrapperNode [2025-03-16 20:06:30,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:30,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:30,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:06:30,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:06:30,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:30,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,188 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13128 [2025-03-16 20:06:31,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:31,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:06:31,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:06:31,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:06:31,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,327 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:06:31,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,594 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:06:31,702 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:06:31,702 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:06:31,702 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:06:31,703 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (1/1) ... [2025-03-16 20:06:31,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:31,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:31,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:06:31,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:06:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:06:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:06:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:06:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:06:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:06:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:06:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:06:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:06:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:06:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:06:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:06:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:06:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:06:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:06:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:06:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:06:31,857 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:06:31,859 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:06:38,022 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:06:38,023 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:06:38,023 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:06:38,023 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:06:38,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:06:38,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:06:38,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:06:38,240 INFO L? ?]: Removed 1735 outVars from TransFormulas that were not future-live. [2025-03-16 20:06:38,240 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:06:38,296 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:06:38,299 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:06:38,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:38 BoogieIcfgContainer [2025-03-16 20:06:38,300 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:06:38,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:06:38,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:06:38,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:06:38,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:06:28" (1/3) ... [2025-03-16 20:06:38,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a86e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:38, skipping insertion in model container [2025-03-16 20:06:38,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:30" (2/3) ... [2025-03-16 20:06:38,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a86e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:38, skipping insertion in model container [2025-03-16 20:06:38,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:38" (3/3) ... [2025-03-16 20:06:38,308 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.11.cil-2.c [2025-03-16 20:06:38,319 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:06:38,322 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label48+token_ring.11.cil-2.c that has 7 procedures, 2460 locations, 1 initial locations, 15 loop locations, and 2 error locations. [2025-03-16 20:06:38,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:06:38,422 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;@1afb1da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:06:38,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:06:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 2460 states, 2427 states have (on average 1.8652657601977751) internal successors, (4527), 2429 states have internal predecessors, (4527), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-16 20:06:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:38,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:38,447 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:38,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:38,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1933840795, now seen corresponding path program 1 times [2025-03-16 20:06:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620563607] [2025-03-16 20:06:38,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:38,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:38,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:38,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:38,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620563607] [2025-03-16 20:06:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620563607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:38,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:38,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:38,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204486997] [2025-03-16 20:06:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:38,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:38,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:38,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:39,005 INFO L87 Difference]: Start difference. First operand has 2460 states, 2427 states have (on average 1.8652657601977751) internal successors, (4527), 2429 states have internal predecessors, (4527), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:39,710 INFO L93 Difference]: Finished difference Result 5268 states and 9736 transitions. [2025-03-16 20:06:39,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:06:39,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:39,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:39,733 INFO L225 Difference]: With dead ends: 5268 [2025-03-16 20:06:39,733 INFO L226 Difference]: Without dead ends: 2817 [2025-03-16 20:06:39,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:39,742 INFO L435 NwaCegarLoop]: 4389 mSDtfsCounter, 4991 mSDsluCounter, 9014 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 13403 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:39,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5010 Valid, 13403 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2025-03-16 20:06:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2790. [2025-03-16 20:06:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2730 states have (on average 1.810989010989011) internal successors, (4944), 2733 states have internal predecessors, (4944), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2025-03-16 20:06:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 5035 transitions. [2025-03-16 20:06:39,913 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 5035 transitions. Word has length 151 [2025-03-16 20:06:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:39,913 INFO L471 AbstractCegarLoop]: Abstraction has 2790 states and 5035 transitions. [2025-03-16 20:06:39,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 5035 transitions. [2025-03-16 20:06:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:39,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:39,921 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:39,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:06:39,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:39,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 153029927, now seen corresponding path program 1 times [2025-03-16 20:06:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190066006] [2025-03-16 20:06:39,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:39,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:39,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:39,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:39,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:40,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:40,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190066006] [2025-03-16 20:06:40,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190066006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:40,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:40,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177914804] [2025-03-16 20:06:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:40,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:40,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:40,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:40,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:40,186 INFO L87 Difference]: Start difference. First operand 2790 states and 5035 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:40,527 INFO L93 Difference]: Finished difference Result 3514 states and 6223 transitions. [2025-03-16 20:06:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:40,538 INFO L225 Difference]: With dead ends: 3514 [2025-03-16 20:06:40,539 INFO L226 Difference]: Without dead ends: 2862 [2025-03-16 20:06:40,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:40,542 INFO L435 NwaCegarLoop]: 4371 mSDtfsCounter, 4684 mSDsluCounter, 8597 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4703 SdHoareTripleChecker+Valid, 12968 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:40,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4703 Valid, 12968 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:06:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2025-03-16 20:06:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2790. [2025-03-16 20:06:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2730 states have (on average 1.8102564102564103) internal successors, (4942), 2733 states have internal predecessors, (4942), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2025-03-16 20:06:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 5033 transitions. [2025-03-16 20:06:40,611 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 5033 transitions. Word has length 151 [2025-03-16 20:06:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:40,611 INFO L471 AbstractCegarLoop]: Abstraction has 2790 states and 5033 transitions. [2025-03-16 20:06:40,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 5033 transitions. [2025-03-16 20:06:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:40,613 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:40,613 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:06:40,614 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:40,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1656873658, now seen corresponding path program 1 times [2025-03-16 20:06:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386051483] [2025-03-16 20:06:40,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:40,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:40,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:40,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:40,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386051483] [2025-03-16 20:06:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386051483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:40,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104693213] [2025-03-16 20:06:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:40,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:40,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:40,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:40,865 INFO L87 Difference]: Start difference. First operand 2790 states and 5033 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:41,555 INFO L93 Difference]: Finished difference Result 3865 states and 6784 transitions. [2025-03-16 20:06:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:41,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:41,572 INFO L225 Difference]: With dead ends: 3865 [2025-03-16 20:06:41,572 INFO L226 Difference]: Without dead ends: 3213 [2025-03-16 20:06:41,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:41,578 INFO L435 NwaCegarLoop]: 4664 mSDtfsCounter, 4982 mSDsluCounter, 14038 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5001 SdHoareTripleChecker+Valid, 18702 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:41,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5001 Valid, 18702 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2025-03-16 20:06:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3098. [2025-03-16 20:06:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3011 states have (on average 1.7891066090999668) internal successors, (5387), 3015 states have internal predecessors, (5387), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2025-03-16 20:06:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 5521 transitions. [2025-03-16 20:06:41,668 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 5521 transitions. Word has length 151 [2025-03-16 20:06:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:41,668 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 5521 transitions. [2025-03-16 20:06:41,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 5521 transitions. [2025-03-16 20:06:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:41,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:41,670 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:41,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:06:41,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:41,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1949259483, now seen corresponding path program 1 times [2025-03-16 20:06:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256119023] [2025-03-16 20:06:41,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:41,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:41,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:41,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:41,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:41,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256119023] [2025-03-16 20:06:41,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256119023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:41,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:41,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:41,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670565803] [2025-03-16 20:06:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:41,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:41,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:41,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:41,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:41,875 INFO L87 Difference]: Start difference. First operand 3098 states and 5521 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:42,557 INFO L93 Difference]: Finished difference Result 4847 states and 8363 transitions. [2025-03-16 20:06:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:42,572 INFO L225 Difference]: With dead ends: 4847 [2025-03-16 20:06:42,573 INFO L226 Difference]: Without dead ends: 3887 [2025-03-16 20:06:42,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:42,577 INFO L435 NwaCegarLoop]: 4660 mSDtfsCounter, 4977 mSDsluCounter, 14026 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 18686 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:42,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 18686 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2025-03-16 20:06:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3755. [2025-03-16 20:06:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3612 states have (on average 1.7585825027685493) internal successors, (6352), 3620 states have internal predecessors, (6352), 105 states have call successors, (105), 30 states have call predecessors, (105), 36 states have return successors, (121), 108 states have call predecessors, (121), 105 states have call successors, (121) [2025-03-16 20:06:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 6578 transitions. [2025-03-16 20:06:42,689 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 6578 transitions. Word has length 151 [2025-03-16 20:06:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:42,690 INFO L471 AbstractCegarLoop]: Abstraction has 3755 states and 6578 transitions. [2025-03-16 20:06:42,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 6578 transitions. [2025-03-16 20:06:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:42,692 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:42,692 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:42,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:06:42,693 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:42,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -19028634, now seen corresponding path program 1 times [2025-03-16 20:06:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827510220] [2025-03-16 20:06:42,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:42,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:42,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:42,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:42,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827510220] [2025-03-16 20:06:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827510220] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:42,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:42,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274334496] [2025-03-16 20:06:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:42,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:42,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:42,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:42,855 INFO L87 Difference]: Start difference. First operand 3755 states and 6578 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:43,623 INFO L93 Difference]: Finished difference Result 6970 states and 11842 transitions. [2025-03-16 20:06:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:43,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:43,644 INFO L225 Difference]: With dead ends: 6970 [2025-03-16 20:06:43,645 INFO L226 Difference]: Without dead ends: 5353 [2025-03-16 20:06:43,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:43,650 INFO L435 NwaCegarLoop]: 4657 mSDtfsCounter, 4972 mSDsluCounter, 14017 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 18674 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:43,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4991 Valid, 18674 Invalid, 999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2025-03-16 20:06:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5186. [2025-03-16 20:06:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 4925 states have (on average 1.7250761421319798) internal successors, (8496), 4947 states have internal predecessors, (8496), 185 states have call successors, (185), 54 states have call predecessors, (185), 74 states have return successors, (249), 192 states have call predecessors, (249), 185 states have call successors, (249) [2025-03-16 20:06:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 8930 transitions. [2025-03-16 20:06:43,837 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 8930 transitions. Word has length 151 [2025-03-16 20:06:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:43,838 INFO L471 AbstractCegarLoop]: Abstraction has 5186 states and 8930 transitions. [2025-03-16 20:06:43,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 8930 transitions. [2025-03-16 20:06:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:43,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:43,844 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:43,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:06:43,844 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:43,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash -233857787, now seen corresponding path program 1 times [2025-03-16 20:06:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899238996] [2025-03-16 20:06:43,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:43,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:43,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:43,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:43,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:43,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:44,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899238996] [2025-03-16 20:06:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899238996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:44,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:44,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:44,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455074821] [2025-03-16 20:06:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:44,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:44,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:44,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:44,012 INFO L87 Difference]: Start difference. First operand 5186 states and 8930 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:44,805 INFO L93 Difference]: Finished difference Result 11665 states and 19740 transitions. [2025-03-16 20:06:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:44,838 INFO L225 Difference]: With dead ends: 11665 [2025-03-16 20:06:44,839 INFO L226 Difference]: Without dead ends: 8617 [2025-03-16 20:06:44,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:44,851 INFO L435 NwaCegarLoop]: 4654 mSDtfsCounter, 4967 mSDsluCounter, 14008 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 18662 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:44,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4986 Valid, 18662 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8617 states. [2025-03-16 20:06:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8617 to 8381. [2025-03-16 20:06:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7866 states have (on average 1.702517162471396) internal successors, (13392), 7934 states have internal predecessors, (13392), 345 states have call successors, (345), 102 states have call predecessors, (345), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2025-03-16 20:06:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 14338 transitions. [2025-03-16 20:06:45,069 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 14338 transitions. Word has length 151 [2025-03-16 20:06:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:45,069 INFO L471 AbstractCegarLoop]: Abstraction has 8381 states and 14338 transitions. [2025-03-16 20:06:45,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 14338 transitions. [2025-03-16 20:06:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:45,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:45,074 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:45,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:06:45,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:45,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1560327558, now seen corresponding path program 1 times [2025-03-16 20:06:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328115977] [2025-03-16 20:06:45,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:45,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:45,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:45,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:45,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328115977] [2025-03-16 20:06:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328115977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:45,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:45,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:45,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723433142] [2025-03-16 20:06:45,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:45,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:45,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:45,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:45,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:45,179 INFO L87 Difference]: Start difference. First operand 8381 states and 14338 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:45,662 INFO L93 Difference]: Finished difference Result 16118 states and 27718 transitions. [2025-03-16 20:06:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:45,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:45,693 INFO L225 Difference]: With dead ends: 16118 [2025-03-16 20:06:45,693 INFO L226 Difference]: Without dead ends: 9875 [2025-03-16 20:06:45,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:45,710 INFO L435 NwaCegarLoop]: 4358 mSDtfsCounter, 4676 mSDsluCounter, 8572 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 12930 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:45,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4695 Valid, 12930 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9875 states. [2025-03-16 20:06:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9875 to 8381. [2025-03-16 20:06:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7866 states have (on average 1.7003559623696924) internal successors, (13375), 7934 states have internal predecessors, (13375), 345 states have call successors, (345), 102 states have call predecessors, (345), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2025-03-16 20:06:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 14321 transitions. [2025-03-16 20:06:45,926 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 14321 transitions. Word has length 151 [2025-03-16 20:06:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:45,926 INFO L471 AbstractCegarLoop]: Abstraction has 8381 states and 14321 transitions. [2025-03-16 20:06:45,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 14321 transitions. [2025-03-16 20:06:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:45,931 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:45,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:45,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:06:45,932 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:45,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2033846501, now seen corresponding path program 1 times [2025-03-16 20:06:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895553725] [2025-03-16 20:06:45,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:45,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:45,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:45,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:45,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:46,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:46,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895553725] [2025-03-16 20:06:46,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895553725] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:46,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:46,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:46,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831050203] [2025-03-16 20:06:46,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:46,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:46,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:46,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:46,037 INFO L87 Difference]: Start difference. First operand 8381 states and 14321 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:46,454 INFO L93 Difference]: Finished difference Result 16035 states and 27518 transitions. [2025-03-16 20:06:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:46,486 INFO L225 Difference]: With dead ends: 16035 [2025-03-16 20:06:46,486 INFO L226 Difference]: Without dead ends: 9792 [2025-03-16 20:06:46,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:46,506 INFO L435 NwaCegarLoop]: 4355 mSDtfsCounter, 4673 mSDsluCounter, 8567 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4692 SdHoareTripleChecker+Valid, 12922 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:46,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4692 Valid, 12922 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2025-03-16 20:06:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 8381. [2025-03-16 20:06:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7866 states have (on average 1.6981947622679887) internal successors, (13358), 7934 states have internal predecessors, (13358), 345 states have call successors, (345), 102 states have call predecessors, (345), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2025-03-16 20:06:46,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 14304 transitions. [2025-03-16 20:06:46,741 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 14304 transitions. Word has length 151 [2025-03-16 20:06:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:46,741 INFO L471 AbstractCegarLoop]: Abstraction has 8381 states and 14304 transitions. [2025-03-16 20:06:46,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 14304 transitions. [2025-03-16 20:06:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:46,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:46,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:46,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:06:46,747 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:46,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1830203994, now seen corresponding path program 1 times [2025-03-16 20:06:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393329823] [2025-03-16 20:06:46,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:46,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:46,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:46,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:46,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393329823] [2025-03-16 20:06:46,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393329823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:46,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:46,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877701421] [2025-03-16 20:06:46,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:46,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:46,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:46,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:46,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:46,868 INFO L87 Difference]: Start difference. First operand 8381 states and 14304 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:47,736 INFO L93 Difference]: Finished difference Result 22128 states and 37832 transitions. [2025-03-16 20:06:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:47,789 INFO L225 Difference]: With dead ends: 22128 [2025-03-16 20:06:47,789 INFO L226 Difference]: Without dead ends: 15885 [2025-03-16 20:06:47,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:47,814 INFO L435 NwaCegarLoop]: 4641 mSDtfsCounter, 4946 mSDsluCounter, 13971 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 18612 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:47,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 18612 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15885 states. [2025-03-16 20:06:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15885 to 15554. [2025-03-16 20:06:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 14477 states have (on average 1.6933066243006147) internal successors, (24514), 14691 states have internal predecessors, (24514), 665 states have call successors, (665), 198 states have call predecessors, (665), 410 states have return successors, (1689), 696 states have call predecessors, (1689), 665 states have call successors, (1689) [2025-03-16 20:06:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 26868 transitions. [2025-03-16 20:06:48,347 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 26868 transitions. Word has length 151 [2025-03-16 20:06:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:48,347 INFO L471 AbstractCegarLoop]: Abstraction has 15554 states and 26868 transitions. [2025-03-16 20:06:48,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 26868 transitions. [2025-03-16 20:06:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:48,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:48,355 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:48,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:06:48,355 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:48,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:48,358 INFO L85 PathProgramCache]: Analyzing trace with hash -707924795, now seen corresponding path program 1 times [2025-03-16 20:06:48,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:48,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975937309] [2025-03-16 20:06:48,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:48,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:48,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:48,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:48,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:48,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:48,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:48,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975937309] [2025-03-16 20:06:48,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975937309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:48,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180920183] [2025-03-16 20:06:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:48,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:48,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:48,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:48,465 INFO L87 Difference]: Start difference. First operand 15554 states and 26868 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:49,028 INFO L93 Difference]: Finished difference Result 32400 states and 56964 transitions. [2025-03-16 20:06:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:49,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:49,091 INFO L225 Difference]: With dead ends: 32400 [2025-03-16 20:06:49,092 INFO L226 Difference]: Without dead ends: 18984 [2025-03-16 20:06:49,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:49,130 INFO L435 NwaCegarLoop]: 4348 mSDtfsCounter, 4668 mSDsluCounter, 8554 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 12902 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:49,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 12902 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18984 states. [2025-03-16 20:06:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18984 to 15554. [2025-03-16 20:06:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 14477 states have (on average 1.6910271465082545) internal successors, (24481), 14691 states have internal predecessors, (24481), 665 states have call successors, (665), 198 states have call predecessors, (665), 410 states have return successors, (1689), 696 states have call predecessors, (1689), 665 states have call successors, (1689) [2025-03-16 20:06:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 26835 transitions. [2025-03-16 20:06:49,872 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 26835 transitions. Word has length 151 [2025-03-16 20:06:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:49,872 INFO L471 AbstractCegarLoop]: Abstraction has 15554 states and 26835 transitions. [2025-03-16 20:06:49,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 26835 transitions. [2025-03-16 20:06:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:49,882 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:49,882 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:49,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:06:49,883 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:49,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:49,883 INFO L85 PathProgramCache]: Analyzing trace with hash 893241252, now seen corresponding path program 1 times [2025-03-16 20:06:49,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:49,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709147994] [2025-03-16 20:06:49,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:49,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:49,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:49,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:49,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:49,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709147994] [2025-03-16 20:06:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709147994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663045088] [2025-03-16 20:06:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:50,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:50,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:50,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:50,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:50,029 INFO L87 Difference]: Start difference. First operand 15554 states and 26835 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:51,429 INFO L93 Difference]: Finished difference Result 47901 states and 84136 transitions. [2025-03-16 20:06:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:51,548 INFO L225 Difference]: With dead ends: 47901 [2025-03-16 20:06:51,548 INFO L226 Difference]: Without dead ends: 34485 [2025-03-16 20:06:51,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:51,590 INFO L435 NwaCegarLoop]: 4627 mSDtfsCounter, 5238 mSDsluCounter, 13927 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5269 SdHoareTripleChecker+Valid, 18554 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:51,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5269 Valid, 18554 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:51,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34485 states. [2025-03-16 20:06:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34485 to 31667. [2025-03-16 20:06:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31667 states, 29336 states have (on average 1.7016975729479138) internal successors, (49921), 30004 states have internal predecessors, (49921), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 1056 states have return successors, (5369), 1336 states have call predecessors, (5369), 1273 states have call successors, (5369) [2025-03-16 20:06:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31667 states to 31667 states and 56563 transitions. [2025-03-16 20:06:52,645 INFO L78 Accepts]: Start accepts. Automaton has 31667 states and 56563 transitions. Word has length 151 [2025-03-16 20:06:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:52,646 INFO L471 AbstractCegarLoop]: Abstraction has 31667 states and 56563 transitions. [2025-03-16 20:06:52,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 31667 states and 56563 transitions. [2025-03-16 20:06:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:52,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:52,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:52,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:06:52,657 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:52,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash 252155109, now seen corresponding path program 1 times [2025-03-16 20:06:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:52,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72080833] [2025-03-16 20:06:52,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:52,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:52,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:52,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:52,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:52,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:52,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72080833] [2025-03-16 20:06:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72080833] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:52,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:52,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752992812] [2025-03-16 20:06:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:52,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:52,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:52,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:52,734 INFO L87 Difference]: Start difference. First operand 31667 states and 56563 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:53,946 INFO L93 Difference]: Finished difference Result 69968 states and 128716 transitions. [2025-03-16 20:06:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:53,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:54,102 INFO L225 Difference]: With dead ends: 69968 [2025-03-16 20:06:54,103 INFO L226 Difference]: Without dead ends: 40439 [2025-03-16 20:06:54,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:54,180 INFO L435 NwaCegarLoop]: 4343 mSDtfsCounter, 4662 mSDsluCounter, 8543 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 12886 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:54,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 12886 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40439 states. [2025-03-16 20:06:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40439 to 31667. [2025-03-16 20:06:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31667 states, 29336 states have (on average 1.6994818652849741) internal successors, (49856), 30004 states have internal predecessors, (49856), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 1056 states have return successors, (5369), 1336 states have call predecessors, (5369), 1273 states have call successors, (5369) [2025-03-16 20:06:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31667 states to 31667 states and 56498 transitions. [2025-03-16 20:06:55,940 INFO L78 Accepts]: Start accepts. Automaton has 31667 states and 56498 transitions. Word has length 151 [2025-03-16 20:06:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:55,942 INFO L471 AbstractCegarLoop]: Abstraction has 31667 states and 56498 transitions. [2025-03-16 20:06:55,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 31667 states and 56498 transitions. [2025-03-16 20:06:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:06:55,954 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:55,954 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:55,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:06:55,954 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:55,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1478400900, now seen corresponding path program 1 times [2025-03-16 20:06:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:55,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264458101] [2025-03-16 20:06:55,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:55,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:55,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:06:55,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:06:55,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:55,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:56,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264458101] [2025-03-16 20:06:56,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264458101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:56,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:56,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146098386] [2025-03-16 20:06:56,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:56,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:56,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:56,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:56,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:56,090 INFO L87 Difference]: Start difference. First operand 31667 states and 56498 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:06:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:58,536 INFO L93 Difference]: Finished difference Result 102854 states and 190527 transitions. [2025-03-16 20:06:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:58,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:06:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:59,099 INFO L225 Difference]: With dead ends: 102854 [2025-03-16 20:06:59,099 INFO L226 Difference]: Without dead ends: 73325 [2025-03-16 20:06:59,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:59,228 INFO L435 NwaCegarLoop]: 4619 mSDtfsCounter, 5171 mSDsluCounter, 13904 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 18523 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:59,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 18523 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73325 states. [2025-03-16 20:07:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73325 to 68657. [2025-03-16 20:07:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68657 states, 63364 states have (on average 1.7176630263240957) internal successors, (108838), 65426 states have internal predecessors, (108838), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 2834 states have return successors, (18841), 2584 states have call predecessors, (18841), 2457 states have call successors, (18841) [2025-03-16 20:07:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68657 states to 68657 states and 130136 transitions. [2025-03-16 20:07:02,630 INFO L78 Accepts]: Start accepts. Automaton has 68657 states and 130136 transitions. Word has length 151 [2025-03-16 20:07:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:02,630 INFO L471 AbstractCegarLoop]: Abstraction has 68657 states and 130136 transitions. [2025-03-16 20:07:02,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 68657 states and 130136 transitions. [2025-03-16 20:07:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:07:02,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:02,651 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:02,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:07:02,652 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:02,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1530084091, now seen corresponding path program 1 times [2025-03-16 20:07:02,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:02,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147294120] [2025-03-16 20:07:02,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:02,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:02,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:07:02,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:07:02,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:02,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:02,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147294120] [2025-03-16 20:07:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147294120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:02,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:02,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256518679] [2025-03-16 20:07:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:02,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:02,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:02,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:02,755 INFO L87 Difference]: Start difference. First operand 68657 states and 130136 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:05,562 INFO L93 Difference]: Finished difference Result 157066 states and 310140 transitions. [2025-03-16 20:07:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:07:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:05,949 INFO L225 Difference]: With dead ends: 157066 [2025-03-16 20:07:05,949 INFO L226 Difference]: Without dead ends: 90547 [2025-03-16 20:07:06,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:06,127 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4658 mSDsluCounter, 8534 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 12872 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:06,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 12872 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:07:06,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90547 states. [2025-03-16 20:07:10,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90547 to 68657. [2025-03-16 20:07:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68657 states, 63364 states have (on average 1.715627170001894) internal successors, (108709), 65426 states have internal predecessors, (108709), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 2834 states have return successors, (18841), 2584 states have call predecessors, (18841), 2457 states have call successors, (18841) [2025-03-16 20:07:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68657 states to 68657 states and 130007 transitions. [2025-03-16 20:07:10,599 INFO L78 Accepts]: Start accepts. Automaton has 68657 states and 130007 transitions. Word has length 151 [2025-03-16 20:07:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:10,600 INFO L471 AbstractCegarLoop]: Abstraction has 68657 states and 130007 transitions. [2025-03-16 20:07:10,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 68657 states and 130007 transitions. [2025-03-16 20:07:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:07:10,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:10,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:10,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:07:10,621 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:10,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 451077988, now seen corresponding path program 1 times [2025-03-16 20:07:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818294965] [2025-03-16 20:07:10,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:10,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:07:10,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:07:10,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:10,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:10,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818294965] [2025-03-16 20:07:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818294965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:10,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082076928] [2025-03-16 20:07:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:10,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:10,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:10,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:10,746 INFO L87 Difference]: Start difference. First operand 68657 states and 130007 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:14,733 INFO L93 Difference]: Finished difference Result 154877 states and 305504 transitions. [2025-03-16 20:07:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:07:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:15,179 INFO L225 Difference]: With dead ends: 154877 [2025-03-16 20:07:15,179 INFO L226 Difference]: Without dead ends: 88358 [2025-03-16 20:07:15,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:15,408 INFO L435 NwaCegarLoop]: 4335 mSDtfsCounter, 4655 mSDsluCounter, 8529 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 12864 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:15,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 12864 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:07:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88358 states. [2025-03-16 20:07:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88358 to 68657. [2025-03-16 20:07:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68657 states, 63364 states have (on average 1.7135913136796919) internal successors, (108580), 65426 states have internal predecessors, (108580), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 2834 states have return successors, (18841), 2584 states have call predecessors, (18841), 2457 states have call successors, (18841) [2025-03-16 20:07:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68657 states to 68657 states and 129878 transitions. [2025-03-16 20:07:18,766 INFO L78 Accepts]: Start accepts. Automaton has 68657 states and 129878 transitions. Word has length 151 [2025-03-16 20:07:18,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:18,767 INFO L471 AbstractCegarLoop]: Abstraction has 68657 states and 129878 transitions. [2025-03-16 20:07:18,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 68657 states and 129878 transitions. [2025-03-16 20:07:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 20:07:18,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:18,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:18,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 20:07:18,783 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:18,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -731939547, now seen corresponding path program 1 times [2025-03-16 20:07:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:18,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469971330] [2025-03-16 20:07:18,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:18,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:18,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 20:07:18,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 20:07:18,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:18,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469971330] [2025-03-16 20:07:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469971330] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:18,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:18,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738636872] [2025-03-16 20:07:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:18,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:18,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:18,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:18,880 INFO L87 Difference]: Start difference. First operand 68657 states and 129878 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:25,095 INFO L93 Difference]: Finished difference Result 225020 states and 452973 transitions. [2025-03-16 20:07:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:25,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2025-03-16 20:07:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:26,011 INFO L225 Difference]: With dead ends: 225020 [2025-03-16 20:07:26,011 INFO L226 Difference]: Without dead ends: 158501 [2025-03-16 20:07:26,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:26,366 INFO L435 NwaCegarLoop]: 4606 mSDtfsCounter, 5069 mSDsluCounter, 13867 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5100 SdHoareTripleChecker+Valid, 18473 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:26,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5100 Valid, 18473 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:07:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158501 states.