./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.13.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_label41+token_ring.13.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 6167950643e67727b303c7b99fc0839aa2067301d926538b67f3f160c480440e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:56:30,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:56:30,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:56:30,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:56:30,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:56:30,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:56:30,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:56:30,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:56:30,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:56:30,883 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:56:30,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:56:30,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:56:30,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:56:30,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:56:30,884 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:56:30,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:56:30,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:56:30,885 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:56:30,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:56:30,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:56:30,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:56:30,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:30,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:56:30,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:56:30,886 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:56:30,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:56:30,887 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 -> 6167950643e67727b303c7b99fc0839aa2067301d926538b67f3f160c480440e [2025-03-16 19:56:31,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:56:31,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:56:31,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:56:31,114 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:56:31,114 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:56:31,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.13.cil-2.c [2025-03-16 19:56:32,278 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2dfa279/2b67458e420b4cfaba7677b584af19c3/FLAGa8980aef3 [2025-03-16 19:56:32,888 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:56:32,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.13.cil-2.c [2025-03-16 19:56:32,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2dfa279/2b67458e420b4cfaba7677b584af19c3/FLAGa8980aef3 [2025-03-16 19:56:33,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2dfa279/2b67458e420b4cfaba7677b584af19c3 [2025-03-16 19:56:33,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:56:33,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:56:33,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:33,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:56:33,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:56:33,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:33" (1/1) ... [2025-03-16 19:56:33,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db62278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:33, skipping insertion in model container [2025-03-16 19:56:33,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:33" (1/1) ... [2025-03-16 19:56:33,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:56:34,602 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_label41+token_ring.13.cil-2.c[376251,376264] [2025-03-16 19:56:34,633 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_label41+token_ring.13.cil-2.c[383339,383352] [2025-03-16 19:56:34,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:34,904 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:56:35,372 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_label41+token_ring.13.cil-2.c[376251,376264] [2025-03-16 19:56:35,378 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_label41+token_ring.13.cil-2.c[383339,383352] [2025-03-16 19:56:35,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:35,470 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:56:35,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35 WrapperNode [2025-03-16 19:56:35,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:35,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:35,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:56:35,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:56:35,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:35,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:35,994 INFO L138 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13242 [2025-03-16 19:56:35,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:35,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:56:35,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:56:35,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:56:36,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,076 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,149 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:56:36,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,292 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:56:36,403 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:56:36,403 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:56:36,403 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:56:36,404 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (1/1) ... [2025-03-16 19:56:36,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:56:36,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:56:36,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:56:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:56:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:56:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:56:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:56:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:56:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:56:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:56:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:56:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:56:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:56:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:56:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:56:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:56:36,565 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:56:36,567 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:56:42,461 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:56:42,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:56:42,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:56:42,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:56:42,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:56:42,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:56:42,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:56:42,695 INFO L? ?]: Removed 1745 outVars from TransFormulas that were not future-live. [2025-03-16 19:56:42,695 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:56:42,741 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:56:42,741 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:56:42,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:42 BoogieIcfgContainer [2025-03-16 19:56:42,742 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:56:42,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:56:42,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:56:42,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:56:42,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:56:33" (1/3) ... [2025-03-16 19:56:42,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d63198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:42, skipping insertion in model container [2025-03-16 19:56:42,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:35" (2/3) ... [2025-03-16 19:56:42,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d63198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:42, skipping insertion in model container [2025-03-16 19:56:42,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:42" (3/3) ... [2025-03-16 19:56:42,748 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.13.cil-2.c [2025-03-16 19:56:42,758 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:56:42,761 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.13.cil-2.c that has 7 procedures, 2508 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2025-03-16 19:56:42,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:56:42,862 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;@34a34684, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:56:42,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:56:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 2508 states, 2473 states have (on average 1.862110796603316) internal successors, (4605), 2475 states have internal predecessors, (4605), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-16 19:56:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:42,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:42,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:42,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:42,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1812451893, now seen corresponding path program 1 times [2025-03-16 19:56:42,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:42,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264199510] [2025-03-16 19:56:42,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:42,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:43,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:43,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:43,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:43,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264199510] [2025-03-16 19:56:43,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264199510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102329689] [2025-03-16 19:56:43,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:43,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:43,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:43,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:43,420 INFO L87 Difference]: Start difference. First operand has 2508 states, 2473 states have (on average 1.862110796603316) internal successors, (4605), 2475 states have internal predecessors, (4605), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 19:56:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:44,307 INFO L93 Difference]: Finished difference Result 5416 states and 9990 transitions. [2025-03-16 19:56:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:56:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:44,338 INFO L225 Difference]: With dead ends: 5416 [2025-03-16 19:56:44,339 INFO L226 Difference]: Without dead ends: 2919 [2025-03-16 19:56:44,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:44,360 INFO L435 NwaCegarLoop]: 4453 mSDtfsCounter, 5155 mSDsluCounter, 9182 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 13635 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:44,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5176 Valid, 13635 Invalid, 689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2025-03-16 19:56:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2888. [2025-03-16 19:56:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2824 states have (on average 1.8059490084985836) internal successors, (5100), 2827 states have internal predecessors, (5100), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 19:56:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 5199 transitions. [2025-03-16 19:56:44,556 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 5199 transitions. Word has length 171 [2025-03-16 19:56:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:44,556 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 5199 transitions. [2025-03-16 19:56:44,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 19:56:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 5199 transitions. [2025-03-16 19:56:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:44,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:44,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:44,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:56:44,568 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:44,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash 974706125, now seen corresponding path program 1 times [2025-03-16 19:56:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:44,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117816958] [2025-03-16 19:56:44,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:44,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:44,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:44,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:44,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:44,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:44,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117816958] [2025-03-16 19:56:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117816958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:44,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393707602] [2025-03-16 19:56:44,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:44,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:44,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:44,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:44,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:44,804 INFO L87 Difference]: Start difference. First operand 2888 states and 5199 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:45,177 INFO L93 Difference]: Finished difference Result 3720 states and 6571 transitions. [2025-03-16 19:56:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:45,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:45,189 INFO L225 Difference]: With dead ends: 3720 [2025-03-16 19:56:45,190 INFO L226 Difference]: Without dead ends: 2972 [2025-03-16 19:56:45,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:45,194 INFO L435 NwaCegarLoop]: 4435 mSDtfsCounter, 4798 mSDsluCounter, 8705 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 13140 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:45,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 13140 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2025-03-16 19:56:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2888. [2025-03-16 19:56:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2824 states have (on average 1.8052407932011332) internal successors, (5098), 2827 states have internal predecessors, (5098), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 19:56:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 5197 transitions. [2025-03-16 19:56:45,271 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 5197 transitions. Word has length 171 [2025-03-16 19:56:45,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:45,271 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 5197 transitions. [2025-03-16 19:56:45,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 5197 transitions. [2025-03-16 19:56:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:45,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:45,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:45,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:56:45,273 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:45,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 842382380, now seen corresponding path program 1 times [2025-03-16 19:56:45,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:45,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391098531] [2025-03-16 19:56:45,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:45,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:45,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:45,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:45,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:45,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391098531] [2025-03-16 19:56:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391098531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:45,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:45,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90411650] [2025-03-16 19:56:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:45,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:45,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:45,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:45,460 INFO L87 Difference]: Start difference. First operand 2888 states and 5197 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:46,259 INFO L93 Difference]: Finished difference Result 4130 states and 7234 transitions. [2025-03-16 19:56:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:46,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:46,275 INFO L225 Difference]: With dead ends: 4130 [2025-03-16 19:56:46,275 INFO L226 Difference]: Without dead ends: 3382 [2025-03-16 19:56:46,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:46,278 INFO L435 NwaCegarLoop]: 4778 mSDtfsCounter, 5153 mSDsluCounter, 14396 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5174 SdHoareTripleChecker+Valid, 19174 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:46,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5174 Valid, 19174 Invalid, 1125 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2025-03-16 19:56:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3243. [2025-03-16 19:56:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3150 states have (on average 1.7831746031746032) internal successors, (5617), 3154 states have internal predecessors, (5617), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-16 19:56:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 5763 transitions. [2025-03-16 19:56:46,356 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 5763 transitions. Word has length 171 [2025-03-16 19:56:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:46,356 INFO L471 AbstractCegarLoop]: Abstraction has 3243 states and 5763 transitions. [2025-03-16 19:56:46,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 5763 transitions. [2025-03-16 19:56:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:46,358 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:46,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:46,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:56:46,359 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:46,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1807945197, now seen corresponding path program 1 times [2025-03-16 19:56:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:46,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023776810] [2025-03-16 19:56:46,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:46,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:46,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:46,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:46,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:46,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023776810] [2025-03-16 19:56:46,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023776810] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:46,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:46,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170268016] [2025-03-16 19:56:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:46,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:46,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:46,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:46,514 INFO L87 Difference]: Start difference. First operand 3243 states and 5763 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:47,219 INFO L93 Difference]: Finished difference Result 5260 states and 9061 transitions. [2025-03-16 19:56:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:47,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:47,234 INFO L225 Difference]: With dead ends: 5260 [2025-03-16 19:56:47,235 INFO L226 Difference]: Without dead ends: 4157 [2025-03-16 19:56:47,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:47,240 INFO L435 NwaCegarLoop]: 4770 mSDtfsCounter, 5145 mSDsluCounter, 14374 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 19144 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:47,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5166 Valid, 19144 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2025-03-16 19:56:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4001. [2025-03-16 19:56:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3848 states have (on average 1.7525987525987525) internal successors, (6744), 3856 states have internal predecessors, (6744), 115 states have call successors, (115), 30 states have call predecessors, (115), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-16 19:56:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6990 transitions. [2025-03-16 19:56:47,343 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6990 transitions. Word has length 171 [2025-03-16 19:56:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:47,343 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 6990 transitions. [2025-03-16 19:56:47,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6990 transitions. [2025-03-16 19:56:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:47,347 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:47,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:47,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:56:47,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:47,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1538532370, now seen corresponding path program 1 times [2025-03-16 19:56:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:47,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129587361] [2025-03-16 19:56:47,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:47,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:47,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:47,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:47,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:47,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:47,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129587361] [2025-03-16 19:56:47,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129587361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:47,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:47,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:47,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513424141] [2025-03-16 19:56:47,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:47,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:47,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:47,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:47,579 INFO L87 Difference]: Start difference. First operand 4001 states and 6990 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:48,398 INFO L93 Difference]: Finished difference Result 7718 states and 13114 transitions. [2025-03-16 19:56:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:48,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:48,419 INFO L225 Difference]: With dead ends: 7718 [2025-03-16 19:56:48,420 INFO L226 Difference]: Without dead ends: 5857 [2025-03-16 19:56:48,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:48,428 INFO L435 NwaCegarLoop]: 4767 mSDtfsCounter, 5140 mSDsluCounter, 14365 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5161 SdHoareTripleChecker+Valid, 19132 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:48,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5161 Valid, 19132 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2025-03-16 19:56:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 5658. [2025-03-16 19:56:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 5379 states have (on average 1.7215095742703104) internal successors, (9260), 5401 states have internal predecessors, (9260), 203 states have call successors, (203), 54 states have call predecessors, (203), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-16 19:56:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 9730 transitions. [2025-03-16 19:56:48,573 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 9730 transitions. Word has length 171 [2025-03-16 19:56:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:48,573 INFO L471 AbstractCegarLoop]: Abstraction has 5658 states and 9730 transitions. [2025-03-16 19:56:48,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 9730 transitions. [2025-03-16 19:56:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:48,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:48,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:48,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:56:48,576 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:48,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:48,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1369388595, now seen corresponding path program 1 times [2025-03-16 19:56:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:48,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643300832] [2025-03-16 19:56:48,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:48,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:48,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:48,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:48,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:48,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:48,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643300832] [2025-03-16 19:56:48,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643300832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:48,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:48,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:48,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752508811] [2025-03-16 19:56:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:48,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:48,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:48,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:48,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:48,721 INFO L87 Difference]: Start difference. First operand 5658 states and 9730 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:49,509 INFO L93 Difference]: Finished difference Result 13179 states and 22352 transitions. [2025-03-16 19:56:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:49,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:49,553 INFO L225 Difference]: With dead ends: 13179 [2025-03-16 19:56:49,553 INFO L226 Difference]: Without dead ends: 9661 [2025-03-16 19:56:49,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:49,563 INFO L435 NwaCegarLoop]: 4764 mSDtfsCounter, 5135 mSDsluCounter, 14356 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 19120 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:49,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 19120 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9661 states. [2025-03-16 19:56:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9661 to 9377. [2025-03-16 19:56:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 8828 states have (on average 1.704123244222927) internal successors, (15044), 8896 states have internal predecessors, (15044), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 19:56:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 16058 transitions. [2025-03-16 19:56:49,790 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 16058 transitions. Word has length 171 [2025-03-16 19:56:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:49,790 INFO L471 AbstractCegarLoop]: Abstraction has 9377 states and 16058 transitions. [2025-03-16 19:56:49,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 16058 transitions. [2025-03-16 19:56:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:49,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:49,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:49,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:56:49,795 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:49,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash 991372302, now seen corresponding path program 1 times [2025-03-16 19:56:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053389544] [2025-03-16 19:56:49,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:49,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:49,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:49,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:49,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053389544] [2025-03-16 19:56:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053389544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981108581] [2025-03-16 19:56:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:49,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:49,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:49,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:49,906 INFO L87 Difference]: Start difference. First operand 9377 states and 16058 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:50,363 INFO L93 Difference]: Finished difference Result 18440 states and 31818 transitions. [2025-03-16 19:56:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:50,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:50,394 INFO L225 Difference]: With dead ends: 18440 [2025-03-16 19:56:50,394 INFO L226 Difference]: Without dead ends: 11203 [2025-03-16 19:56:50,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:50,410 INFO L435 NwaCegarLoop]: 4422 mSDtfsCounter, 4790 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 13102 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:50,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4811 Valid, 13102 Invalid, 478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11203 states. [2025-03-16 19:56:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11203 to 9377. [2025-03-16 19:56:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 8828 states have (on average 1.7021975532396918) internal successors, (15027), 8896 states have internal predecessors, (15027), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 19:56:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 16041 transitions. [2025-03-16 19:56:50,630 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 16041 transitions. Word has length 171 [2025-03-16 19:56:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:50,630 INFO L471 AbstractCegarLoop]: Abstraction has 9377 states and 16041 transitions. [2025-03-16 19:56:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 16041 transitions. [2025-03-16 19:56:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:50,634 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:50,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:50,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:56:50,635 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:50,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1426326099, now seen corresponding path program 1 times [2025-03-16 19:56:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236127546] [2025-03-16 19:56:50,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:50,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:50,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:50,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:50,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:50,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236127546] [2025-03-16 19:56:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236127546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:50,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:50,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829409317] [2025-03-16 19:56:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:50,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:50,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:50,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:50,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:50,732 INFO L87 Difference]: Start difference. First operand 9377 states and 16041 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:51,303 INFO L93 Difference]: Finished difference Result 18357 states and 31618 transitions. [2025-03-16 19:56:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:51,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:51,381 INFO L225 Difference]: With dead ends: 18357 [2025-03-16 19:56:51,381 INFO L226 Difference]: Without dead ends: 11120 [2025-03-16 19:56:51,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:51,410 INFO L435 NwaCegarLoop]: 4419 mSDtfsCounter, 4787 mSDsluCounter, 8675 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4808 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:51,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4808 Valid, 13094 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2025-03-16 19:56:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 9377. [2025-03-16 19:56:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 8828 states have (on average 1.7002718622564568) internal successors, (15010), 8896 states have internal predecessors, (15010), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 19:56:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 16024 transitions. [2025-03-16 19:56:51,674 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 16024 transitions. Word has length 171 [2025-03-16 19:56:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:51,674 INFO L471 AbstractCegarLoop]: Abstraction has 9377 states and 16024 transitions. [2025-03-16 19:56:51,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 16024 transitions. [2025-03-16 19:56:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:51,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:51,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:51,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:56:51,679 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:51,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1504316370, now seen corresponding path program 1 times [2025-03-16 19:56:51,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:51,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007792808] [2025-03-16 19:56:51,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:51,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:51,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:51,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:51,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:51,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007792808] [2025-03-16 19:56:51,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007792808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:51,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:51,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214419694] [2025-03-16 19:56:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:51,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:51,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:51,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:51,836 INFO L87 Difference]: Start difference. First operand 9377 states and 16024 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:52,770 INFO L93 Difference]: Finished difference Result 25462 states and 43700 transitions. [2025-03-16 19:56:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:52,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:52,817 INFO L225 Difference]: With dead ends: 25462 [2025-03-16 19:56:52,818 INFO L226 Difference]: Without dead ends: 18225 [2025-03-16 19:56:52,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:52,840 INFO L435 NwaCegarLoop]: 4751 mSDtfsCounter, 5114 mSDsluCounter, 14319 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5135 SdHoareTripleChecker+Valid, 19070 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:52,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5135 Valid, 19070 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2025-03-16 19:56:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 17814. [2025-03-16 19:56:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 16671 states have (on average 1.7019974806550298) internal successors, (28374), 16885 states have internal predecessors, (28374), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 19:56:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 30860 transitions. [2025-03-16 19:56:53,397 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 30860 transitions. Word has length 171 [2025-03-16 19:56:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:53,397 INFO L471 AbstractCegarLoop]: Abstraction has 17814 states and 30860 transitions. [2025-03-16 19:56:53,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 30860 transitions. [2025-03-16 19:56:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:53,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:53,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:53,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:56:53,406 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:53,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash 848472461, now seen corresponding path program 1 times [2025-03-16 19:56:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594733503] [2025-03-16 19:56:53,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:53,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:53,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:53,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:53,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:53,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:53,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594733503] [2025-03-16 19:56:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594733503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:53,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:53,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120677531] [2025-03-16 19:56:53,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:53,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:53,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:53,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:53,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:53,513 INFO L87 Difference]: Start difference. First operand 17814 states and 30860 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:54,164 INFO L93 Difference]: Finished difference Result 38143 states and 67394 transitions. [2025-03-16 19:56:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:54,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:54,231 INFO L225 Difference]: With dead ends: 38143 [2025-03-16 19:56:54,231 INFO L226 Difference]: Without dead ends: 22469 [2025-03-16 19:56:54,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:54,266 INFO L435 NwaCegarLoop]: 4414 mSDtfsCounter, 4783 mSDsluCounter, 8666 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4804 SdHoareTripleChecker+Valid, 13080 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:54,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4804 Valid, 13080 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22469 states. [2025-03-16 19:56:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22469 to 17814. [2025-03-16 19:56:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 16671 states have (on average 1.7000179953212164) internal successors, (28341), 16885 states have internal predecessors, (28341), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 19:56:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 30827 transitions. [2025-03-16 19:56:54,769 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 30827 transitions. Word has length 171 [2025-03-16 19:56:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:54,770 INFO L471 AbstractCegarLoop]: Abstraction has 17814 states and 30827 transitions. [2025-03-16 19:56:54,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 30827 transitions. [2025-03-16 19:56:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:54,776 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:54,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:54,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:56:54,777 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:54,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:54,777 INFO L85 PathProgramCache]: Analyzing trace with hash -45462450, now seen corresponding path program 1 times [2025-03-16 19:56:54,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:54,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200792429] [2025-03-16 19:56:54,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:54,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:54,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:54,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:54,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:54,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200792429] [2025-03-16 19:56:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200792429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892215258] [2025-03-16 19:56:54,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:54,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:54,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:54,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:54,857 INFO L87 Difference]: Start difference. First operand 17814 states and 30827 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:55,498 INFO L93 Difference]: Finished difference Result 37653 states and 66348 transitions. [2025-03-16 19:56:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:55,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:55,561 INFO L225 Difference]: With dead ends: 37653 [2025-03-16 19:56:55,561 INFO L226 Difference]: Without dead ends: 21979 [2025-03-16 19:56:55,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:55,595 INFO L435 NwaCegarLoop]: 4409 mSDtfsCounter, 4779 mSDsluCounter, 8657 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 13066 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:55,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4800 Valid, 13066 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21979 states. [2025-03-16 19:56:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21979 to 17814. [2025-03-16 19:56:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 16671 states have (on average 1.6980385099874034) internal successors, (28308), 16885 states have internal predecessors, (28308), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 19:56:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 30794 transitions. [2025-03-16 19:56:56,349 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 30794 transitions. Word has length 171 [2025-03-16 19:56:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:56,350 INFO L471 AbstractCegarLoop]: Abstraction has 17814 states and 30794 transitions. [2025-03-16 19:56:56,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 30794 transitions. [2025-03-16 19:56:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:56,356 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:56,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:56,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:56:56,357 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:56,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -10638513, now seen corresponding path program 1 times [2025-03-16 19:56:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676515016] [2025-03-16 19:56:56,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:56,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:56,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:56,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:56,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:56,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:56,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676515016] [2025-03-16 19:56:56,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676515016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:56,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:56,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:56,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713820424] [2025-03-16 19:56:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:56,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:56,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:56,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:56,497 INFO L87 Difference]: Start difference. First operand 17814 states and 30794 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:57,988 INFO L93 Difference]: Finished difference Result 53221 states and 93940 transitions. [2025-03-16 19:56:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:57,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:56:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:58,092 INFO L225 Difference]: With dead ends: 53221 [2025-03-16 19:56:58,092 INFO L226 Difference]: Without dead ends: 37547 [2025-03-16 19:56:58,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:58,126 INFO L435 NwaCegarLoop]: 4734 mSDtfsCounter, 5090 mSDsluCounter, 14272 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5111 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:58,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5111 Valid, 19006 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37547 states. [2025-03-16 19:56:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37547 to 36956. [2025-03-16 19:56:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36956 states, 34463 states have (on average 1.7121550648521602) internal successors, (59006), 35131 states have internal predecessors, (59006), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-16 19:56:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36956 states to 36956 states and 65972 transitions. [2025-03-16 19:56:59,150 INFO L78 Accepts]: Start accepts. Automaton has 36956 states and 65972 transitions. Word has length 171 [2025-03-16 19:56:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:59,151 INFO L471 AbstractCegarLoop]: Abstraction has 36956 states and 65972 transitions. [2025-03-16 19:56:59,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:56:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 36956 states and 65972 transitions. [2025-03-16 19:56:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:56:59,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:59,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:59,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:56:59,161 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:59,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1949177810, now seen corresponding path program 1 times [2025-03-16 19:56:59,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:59,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434815110] [2025-03-16 19:56:59,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:59,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:59,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:56:59,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:56:59,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:59,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:59,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:59,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434815110] [2025-03-16 19:56:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434815110] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:59,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:59,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:59,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709597] [2025-03-16 19:56:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:59,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:59,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:59,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:59,279 INFO L87 Difference]: Start difference. First operand 36956 states and 65972 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:57:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:01,989 INFO L93 Difference]: Finished difference Result 123387 states and 227689 transitions. [2025-03-16 19:57:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:01,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:57:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:02,520 INFO L225 Difference]: With dead ends: 123387 [2025-03-16 19:57:02,520 INFO L226 Difference]: Without dead ends: 88571 [2025-03-16 19:57:02,582 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 19:57:02,583 INFO L435 NwaCegarLoop]: 4729 mSDtfsCounter, 5447 mSDsluCounter, 14252 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5482 SdHoareTripleChecker+Valid, 18981 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:02,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5482 Valid, 18981 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:57:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88571 states. [2025-03-16 19:57:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88571 to 82095. [2025-03-16 19:57:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82095 states, 76480 states have (on average 1.7374215481171549) internal successors, (132878), 78542 states have internal predecessors, (132878), 2779 states have call successors, (2779), 774 states have call predecessors, (2779), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 19:57:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82095 states to 82095 states and 154820 transitions. [2025-03-16 19:57:05,677 INFO L78 Accepts]: Start accepts. Automaton has 82095 states and 154820 transitions. Word has length 171 [2025-03-16 19:57:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:05,678 INFO L471 AbstractCegarLoop]: Abstraction has 82095 states and 154820 transitions. [2025-03-16 19:57:05,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 19:57:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 82095 states and 154820 transitions. [2025-03-16 19:57:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:57:05,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:05,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:05,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:57:05,694 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:05,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash 897782639, now seen corresponding path program 1 times [2025-03-16 19:57:05,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:05,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256052716] [2025-03-16 19:57:05,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:05,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:05,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:57:05,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:57:05,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:05,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256052716] [2025-03-16 19:57:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256052716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:05,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:05,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064366338] [2025-03-16 19:57:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:05,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:05,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:05,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:05,765 INFO L87 Difference]: Start difference. First operand 82095 states and 154820 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:57:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:10,310 INFO L93 Difference]: Finished difference Result 192696 states and 377016 transitions. [2025-03-16 19:57:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:10,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 19:57:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:10,847 INFO L225 Difference]: With dead ends: 192696 [2025-03-16 19:57:10,848 INFO L226 Difference]: Without dead ends: 112741 [2025-03-16 19:57:10,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:10,989 INFO L435 NwaCegarLoop]: 4402 mSDtfsCounter, 4772 mSDsluCounter, 8642 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4793 SdHoareTripleChecker+Valid, 13044 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:10,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4793 Valid, 13044 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:57:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112741 states. [2025-03-16 19:57:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112741 to 82095. [2025-03-16 19:57:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82095 states, 76480 states have (on average 1.7357348326359832) internal successors, (132749), 78542 states have internal predecessors, (132749), 2779 states have call successors, (2779), 774 states have call predecessors, (2779), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 19:57:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82095 states to 82095 states and 154691 transitions. [2025-03-16 19:57:15,481 INFO L78 Accepts]: Start accepts. Automaton has 82095 states and 154691 transitions. Word has length 171 [2025-03-16 19:57:15,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:15,481 INFO L471 AbstractCegarLoop]: Abstraction has 82095 states and 154691 transitions. [2025-03-16 19:57:15,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:57:15,482 INFO L276 IsEmpty]: Start isEmpty. Operand 82095 states and 154691 transitions. [2025-03-16 19:57:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 19:57:15,498 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:15,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:15,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:57:15,498 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:15,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2058421234, now seen corresponding path program 1 times [2025-03-16 19:57:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408085106] [2025-03-16 19:57:15,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:15,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 19:57:15,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 19:57:15,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:15,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:15,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:15,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408085106] [2025-03-16 19:57:15,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408085106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:15,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:15,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:15,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819144896] [2025-03-16 19:57:15,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:15,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:15,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:15,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:15,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:15,582 INFO L87 Difference]: Start difference. First operand 82095 states and 154691 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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)