./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.12.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 b5cd7deef4282090ab6b6f93cd9f668fbdecc3b4b6223d600f0bc6a04f939e1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:48:27,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:48:27,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:48:27,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:48:27,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:48:27,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:48:27,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:48:27,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:48:27,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:48:27,756 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:48:27,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:48:27,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:48:27,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:48:27,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:48:27,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:48:27,758 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:48:27,759 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:48:27,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:48:27,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:48:27,759 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 -> b5cd7deef4282090ab6b6f93cd9f668fbdecc3b4b6223d600f0bc6a04f939e1e [2025-03-08 06:48:27,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:48:27,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:48:27,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:48:27,972 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:48:27,972 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:48:27,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.12.cil-2.c [2025-03-08 06:48:29,139 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ea4f5fa1/1b482b2afe8441c6a07a2e5b6fe663b5/FLAG9186fc97b [2025-03-08 06:48:29,615 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:48:29,615 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.12.cil-2.c [2025-03-08 06:48:29,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ea4f5fa1/1b482b2afe8441c6a07a2e5b6fe663b5/FLAG9186fc97b [2025-03-08 06:48:29,681 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ea4f5fa1/1b482b2afe8441c6a07a2e5b6fe663b5 [2025-03-08 06:48:29,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:48:29,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:48:29,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:48:29,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:48:29,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:48:29,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:48:29" (1/1) ... [2025-03-08 06:48:29,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdd479a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:29, skipping insertion in model container [2025-03-08 06:48:29,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:48:29" (1/1) ... [2025-03-08 06:48:29,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:48:30,886 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.12.cil-2.c[376251,376264] [2025-03-08 06:48:30,925 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.12.cil-2.c[383339,383352] [2025-03-08 06:48:31,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:48:31,217 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:48:31,712 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.12.cil-2.c[376251,376264] [2025-03-08 06:48:31,720 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.12.cil-2.c[383339,383352] [2025-03-08 06:48:31,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:48:31,820 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:48:31,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31 WrapperNode [2025-03-08 06:48:31,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:48:31,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:48:31,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:48:31,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:48:31,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:31,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,247 INFO L138 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13185 [2025-03-08 06:48:32,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:48:32,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:48:32,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:48:32,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:48:32,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,424 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:48:32,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,557 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:48:32,660 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:48:32,660 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:48:32,660 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:48:32,661 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (1/1) ... [2025-03-08 06:48:32,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:48:32,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:48:32,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:48:32,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:48:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:48:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:48:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:48:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:48:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:48:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:48:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:48:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:48:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:48:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:48:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:48:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:48:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:48:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:48:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:48:32,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:48:32,817 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:48:32,819 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:48:39,078 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:48:39,079 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:48:39,079 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:48:39,079 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:48:39,080 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:48:39,080 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:48:39,080 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:48:39,330 INFO L? ?]: Removed 1755 outVars from TransFormulas that were not future-live. [2025-03-08 06:48:39,331 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:48:39,378 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:48:39,378 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:48:39,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:48:39 BoogieIcfgContainer [2025-03-08 06:48:39,379 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:48:39,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:48:39,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:48:39,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:48:39,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:48:29" (1/3) ... [2025-03-08 06:48:39,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d578d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:48:39, skipping insertion in model container [2025-03-08 06:48:39,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:48:31" (2/3) ... [2025-03-08 06:48:39,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d578d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:48:39, skipping insertion in model container [2025-03-08 06:48:39,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:48:39" (3/3) ... [2025-03-08 06:48:39,387 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.12.cil-2.c [2025-03-08 06:48:39,400 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:48:39,402 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.12.cil-2.c that has 7 procedures, 2563 locations, 1 initial locations, 16 loop locations, and 2 error locations. [2025-03-08 06:48:39,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:48:39,529 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;@63fb4000, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:48:39,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:48:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 2563 states, 2529 states have (on average 1.8366943455911426) internal successors, (4645), 2531 states have internal predecessors, (4645), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 06:48:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:39,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:39,558 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:39,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:39,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1641891274, now seen corresponding path program 1 times [2025-03-08 06:48:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:39,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838146797] [2025-03-08 06:48:39,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:39,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:39,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:39,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:39,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:40,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838146797] [2025-03-08 06:48:40,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838146797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:40,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:40,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:48:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367872523] [2025-03-08 06:48:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:40,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:48:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:40,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:48:40,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:48:40,259 INFO L87 Difference]: Start difference. First operand has 2563 states, 2529 states have (on average 1.8366943455911426) internal successors, (4645), 2531 states have internal predecessors, (4645), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:41,093 INFO L93 Difference]: Finished difference Result 5512 states and 10033 transitions. [2025-03-08 06:48:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:48:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:41,122 INFO L225 Difference]: With dead ends: 5512 [2025-03-08 06:48:41,122 INFO L226 Difference]: Without dead ends: 2899 [2025-03-08 06:48:41,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:41,133 INFO L435 NwaCegarLoop]: 4488 mSDtfsCounter, 5174 mSDsluCounter, 9235 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5194 SdHoareTripleChecker+Valid, 13723 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:41,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5194 Valid, 13723 Invalid, 688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:48:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2025-03-08 06:48:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2870. [2025-03-08 06:48:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2808 states have (on average 1.7995014245014245) internal successors, (5053), 2811 states have internal predecessors, (5053), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2025-03-08 06:48:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 5148 transitions. [2025-03-08 06:48:41,307 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 5148 transitions. Word has length 176 [2025-03-08 06:48:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:41,308 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 5148 transitions. [2025-03-08 06:48:41,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 5148 transitions. [2025-03-08 06:48:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:41,312 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:41,312 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:41,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:48:41,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:41,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash 490598796, now seen corresponding path program 1 times [2025-03-08 06:48:41,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:41,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945833604] [2025-03-08 06:48:41,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:41,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:41,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:41,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:41,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:41,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:41,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945833604] [2025-03-08 06:48:41,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945833604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:41,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:41,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:48:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300397852] [2025-03-08 06:48:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:41,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:48:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:41,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:48:41,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:48:41,531 INFO L87 Difference]: Start difference. First operand 2870 states and 5148 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:41,952 INFO L93 Difference]: Finished difference Result 3677 states and 6457 transitions. [2025-03-08 06:48:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:48:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:41,965 INFO L225 Difference]: With dead ends: 3677 [2025-03-08 06:48:41,965 INFO L226 Difference]: Without dead ends: 2948 [2025-03-08 06:48:41,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:41,970 INFO L435 NwaCegarLoop]: 4407 mSDtfsCounter, 4769 mSDsluCounter, 8659 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 13066 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:41,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4789 Valid, 13066 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:48:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2025-03-08 06:48:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2870. [2025-03-08 06:48:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2808 states have (on average 1.7987891737891737) internal successors, (5051), 2811 states have internal predecessors, (5051), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2025-03-08 06:48:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 5146 transitions. [2025-03-08 06:48:42,056 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 5146 transitions. Word has length 176 [2025-03-08 06:48:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:42,058 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 5146 transitions. [2025-03-08 06:48:42,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 5146 transitions. [2025-03-08 06:48:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:42,060 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:42,060 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:42,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:48:42,061 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:42,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1437765739, now seen corresponding path program 1 times [2025-03-08 06:48:42,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:42,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959020307] [2025-03-08 06:48:42,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:42,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:42,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:42,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:42,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959020307] [2025-03-08 06:48:42,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959020307] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:42,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:42,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:48:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228693632] [2025-03-08 06:48:42,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:42,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:48:42,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:42,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:48:42,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:42,292 INFO L87 Difference]: Start difference. First operand 2870 states and 5146 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:43,055 INFO L93 Difference]: Finished difference Result 4074 states and 7088 transitions. [2025-03-08 06:48:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:48:43,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:43,070 INFO L225 Difference]: With dead ends: 4074 [2025-03-08 06:48:43,070 INFO L226 Difference]: Without dead ends: 3345 [2025-03-08 06:48:43,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:48:43,074 INFO L435 NwaCegarLoop]: 4501 mSDtfsCounter, 5138 mSDsluCounter, 13653 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5158 SdHoareTripleChecker+Valid, 18154 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:43,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5158 Valid, 18154 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:48:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2025-03-08 06:48:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3216. [2025-03-08 06:48:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3126 states have (on average 1.7747920665387076) internal successors, (5548), 3130 states have internal predecessors, (5548), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2025-03-08 06:48:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 5688 transitions. [2025-03-08 06:48:43,167 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 5688 transitions. Word has length 176 [2025-03-08 06:48:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:43,167 INFO L471 AbstractCegarLoop]: Abstraction has 3216 states and 5688 transitions. [2025-03-08 06:48:43,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 5688 transitions. [2025-03-08 06:48:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:43,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:43,170 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:43,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:48:43,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:43,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2133911124, now seen corresponding path program 1 times [2025-03-08 06:48:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707017208] [2025-03-08 06:48:43,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:43,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:43,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:43,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:43,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707017208] [2025-03-08 06:48:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707017208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:48:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567788544] [2025-03-08 06:48:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:43,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:48:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:43,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:48:43,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:43,354 INFO L87 Difference]: Start difference. First operand 3216 states and 5688 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:44,099 INFO L93 Difference]: Finished difference Result 5179 states and 8847 transitions. [2025-03-08 06:48:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:48:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:44,113 INFO L225 Difference]: With dead ends: 5179 [2025-03-08 06:48:44,113 INFO L226 Difference]: Without dead ends: 4104 [2025-03-08 06:48:44,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:48:44,117 INFO L435 NwaCegarLoop]: 4724 mSDtfsCounter, 5104 mSDsluCounter, 14227 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5124 SdHoareTripleChecker+Valid, 18951 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:44,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5124 Valid, 18951 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:48:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2025-03-08 06:48:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3955. [2025-03-08 06:48:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3955 states, 3807 states have (on average 1.7412660887838194) internal successors, (6629), 3815 states have internal predecessors, (6629), 110 states have call successors, (110), 30 states have call predecessors, (110), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2025-03-08 06:48:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 6865 transitions. [2025-03-08 06:48:44,246 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 6865 transitions. Word has length 176 [2025-03-08 06:48:44,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:44,247 INFO L471 AbstractCegarLoop]: Abstraction has 3955 states and 6865 transitions. [2025-03-08 06:48:44,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 6865 transitions. [2025-03-08 06:48:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:44,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:44,249 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:44,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:48:44,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:44,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash -448011189, now seen corresponding path program 1 times [2025-03-08 06:48:44,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:44,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571459198] [2025-03-08 06:48:44,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:44,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:44,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:44,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:44,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:44,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:44,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:44,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571459198] [2025-03-08 06:48:44,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571459198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:44,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:44,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:48:44,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635351770] [2025-03-08 06:48:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:44,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:48:44,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:44,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:48:44,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:44,387 INFO L87 Difference]: Start difference. First operand 3955 states and 6865 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:45,064 INFO L93 Difference]: Finished difference Result 7572 states and 12734 transitions. [2025-03-08 06:48:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:48:45,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:45,085 INFO L225 Difference]: With dead ends: 7572 [2025-03-08 06:48:45,085 INFO L226 Difference]: Without dead ends: 5758 [2025-03-08 06:48:45,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:48:45,092 INFO L435 NwaCegarLoop]: 4721 mSDtfsCounter, 5099 mSDsluCounter, 14218 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 18939 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:45,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5119 Valid, 18939 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:48:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2025-03-08 06:48:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5568. [2025-03-08 06:48:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5298 states have (on average 1.7064930162325407) internal successors, (9041), 5320 states have internal predecessors, (9041), 194 states have call successors, (194), 54 states have call predecessors, (194), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2025-03-08 06:48:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 9493 transitions. [2025-03-08 06:48:45,232 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 9493 transitions. Word has length 176 [2025-03-08 06:48:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:45,234 INFO L471 AbstractCegarLoop]: Abstraction has 5568 states and 9493 transitions. [2025-03-08 06:48:45,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 9493 transitions. [2025-03-08 06:48:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:45,238 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:45,238 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:45,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:48:45,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:45,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -255079988, now seen corresponding path program 1 times [2025-03-08 06:48:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:45,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003644335] [2025-03-08 06:48:45,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:45,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:45,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:45,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:45,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:45,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003644335] [2025-03-08 06:48:45,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003644335] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:45,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:45,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:48:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694398521] [2025-03-08 06:48:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:45,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:48:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:45,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:48:45,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:45,375 INFO L87 Difference]: Start difference. First operand 5568 states and 9493 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:46,103 INFO L93 Difference]: Finished difference Result 12879 states and 21592 transitions. [2025-03-08 06:48:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:48:46,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:46,146 INFO L225 Difference]: With dead ends: 12879 [2025-03-08 06:48:46,146 INFO L226 Difference]: Without dead ends: 9452 [2025-03-08 06:48:46,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:48:46,159 INFO L435 NwaCegarLoop]: 4718 mSDtfsCounter, 5094 mSDsluCounter, 14209 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 18927 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:46,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5114 Valid, 18927 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:48:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2025-03-08 06:48:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9181. [2025-03-08 06:48:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9181 states, 8649 states have (on average 1.6858596369522487) internal successors, (14581), 8717 states have internal predecessors, (14581), 362 states have call successors, (362), 102 states have call predecessors, (362), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2025-03-08 06:48:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9181 states to 9181 states and 15561 transitions. [2025-03-08 06:48:46,455 INFO L78 Accepts]: Start accepts. Automaton has 9181 states and 15561 transitions. Word has length 176 [2025-03-08 06:48:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:46,456 INFO L471 AbstractCegarLoop]: Abstraction has 9181 states and 15561 transitions. [2025-03-08 06:48:46,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9181 states and 15561 transitions. [2025-03-08 06:48:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:46,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:46,461 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:46,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:48:46,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:46,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash -387403733, now seen corresponding path program 1 times [2025-03-08 06:48:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:46,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39805270] [2025-03-08 06:48:46,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:46,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:46,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:46,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:46,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:46,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:46,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39805270] [2025-03-08 06:48:46,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39805270] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:46,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:46,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:48:46,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669241207] [2025-03-08 06:48:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:46,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:48:46,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:46,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:48:46,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:46,603 INFO L87 Difference]: Start difference. First operand 9181 states and 15561 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:47,457 INFO L93 Difference]: Finished difference Result 24982 states and 42538 transitions. [2025-03-08 06:48:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:48:47,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:47,522 INFO L225 Difference]: With dead ends: 24982 [2025-03-08 06:48:47,522 INFO L226 Difference]: Without dead ends: 17942 [2025-03-08 06:48:47,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:48:47,553 INFO L435 NwaCegarLoop]: 4715 mSDtfsCounter, 5089 mSDsluCounter, 14200 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 18915 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:47,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5109 Valid, 18915 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:48:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17942 states. [2025-03-08 06:48:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17942 to 17514. [2025-03-08 06:48:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17514 states, 16404 states have (on average 1.6889173372348207) internal successors, (27705), 16618 states have internal predecessors, (27705), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-03-08 06:48:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17514 states to 17514 states and 30125 transitions. [2025-03-08 06:48:48,089 INFO L78 Accepts]: Start accepts. Automaton has 17514 states and 30125 transitions. Word has length 176 [2025-03-08 06:48:48,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:48,090 INFO L471 AbstractCegarLoop]: Abstraction has 17514 states and 30125 transitions. [2025-03-08 06:48:48,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17514 states and 30125 transitions. [2025-03-08 06:48:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:48,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:48,098 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:48,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:48:48,098 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:48,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash 578159084, now seen corresponding path program 1 times [2025-03-08 06:48:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:48,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421685004] [2025-03-08 06:48:48,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:48,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:48,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:48,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:48,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:48,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:48,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:48,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421685004] [2025-03-08 06:48:48,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421685004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:48,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:48,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:48:48,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096520170] [2025-03-08 06:48:48,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:48,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:48:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:48,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:48:48,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:48:48,206 INFO L87 Difference]: Start difference. First operand 17514 states and 30125 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:48,772 INFO L93 Difference]: Finished difference Result 37787 states and 66414 transitions. [2025-03-08 06:48:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:48:48,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:48,952 INFO L225 Difference]: With dead ends: 37787 [2025-03-08 06:48:48,953 INFO L226 Difference]: Without dead ends: 22414 [2025-03-08 06:48:48,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:48,985 INFO L435 NwaCegarLoop]: 4394 mSDtfsCounter, 4761 mSDsluCounter, 8634 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 13028 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:48,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 13028 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:48:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22414 states. [2025-03-08 06:48:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22414 to 17514. [2025-03-08 06:48:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17514 states, 16404 states have (on average 1.6869056327724945) internal successors, (27672), 16618 states have internal predecessors, (27672), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-03-08 06:48:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17514 states to 17514 states and 30092 transitions. [2025-03-08 06:48:49,414 INFO L78 Accepts]: Start accepts. Automaton has 17514 states and 30092 transitions. Word has length 176 [2025-03-08 06:48:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:49,414 INFO L471 AbstractCegarLoop]: Abstraction has 17514 states and 30092 transitions. [2025-03-08 06:48:49,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 17514 states and 30092 transitions. [2025-03-08 06:48:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:49,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:49,422 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:49,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:48:49,423 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:49,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:49,423 INFO L85 PathProgramCache]: Analyzing trace with hash -83430389, now seen corresponding path program 1 times [2025-03-08 06:48:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355206465] [2025-03-08 06:48:49,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:49,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:49,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:49,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:49,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:49,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355206465] [2025-03-08 06:48:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355206465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:49,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:49,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:48:49,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548571141] [2025-03-08 06:48:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:49,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:48:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:49,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:48:49,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:48:49,528 INFO L87 Difference]: Start difference. First operand 17514 states and 30092 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:50,316 INFO L93 Difference]: Finished difference Result 37542 states and 65858 transitions. [2025-03-08 06:48:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:48:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:50,392 INFO L225 Difference]: With dead ends: 37542 [2025-03-08 06:48:50,392 INFO L226 Difference]: Without dead ends: 22169 [2025-03-08 06:48:50,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:50,436 INFO L435 NwaCegarLoop]: 4391 mSDtfsCounter, 4758 mSDsluCounter, 8629 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4778 SdHoareTripleChecker+Valid, 13020 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:50,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4778 Valid, 13020 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:48:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22169 states. [2025-03-08 06:48:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22169 to 17514. [2025-03-08 06:48:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17514 states, 16404 states have (on average 1.6848939283101683) internal successors, (27639), 16618 states have internal predecessors, (27639), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-03-08 06:48:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17514 states to 17514 states and 30059 transitions. [2025-03-08 06:48:51,123 INFO L78 Accepts]: Start accepts. Automaton has 17514 states and 30059 transitions. Word has length 176 [2025-03-08 06:48:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:51,124 INFO L471 AbstractCegarLoop]: Abstraction has 17514 states and 30059 transitions. [2025-03-08 06:48:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17514 states and 30059 transitions. [2025-03-08 06:48:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:51,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:51,130 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:51,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:48:51,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:51,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:51,130 INFO L85 PathProgramCache]: Analyzing trace with hash 865059340, now seen corresponding path program 1 times [2025-03-08 06:48:51,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290739880] [2025-03-08 06:48:51,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:51,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:51,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:51,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:51,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290739880] [2025-03-08 06:48:51,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290739880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:51,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:51,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:48:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936889026] [2025-03-08 06:48:51,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:51,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:48:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:51,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:48:51,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:51,242 INFO L87 Difference]: Start difference. First operand 17514 states and 30059 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:52,404 INFO L93 Difference]: Finished difference Result 52885 states and 92874 transitions. [2025-03-08 06:48:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:48:52,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:52,520 INFO L225 Difference]: With dead ends: 52885 [2025-03-08 06:48:52,520 INFO L226 Difference]: Without dead ends: 37512 [2025-03-08 06:48:52,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:48:52,570 INFO L435 NwaCegarLoop]: 4702 mSDtfsCounter, 5068 mSDsluCounter, 14163 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 18865 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:52,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5088 Valid, 18865 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 06:48:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37512 states. [2025-03-08 06:48:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37512 to 36853. [2025-03-08 06:48:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36853 states, 34425 states have (on average 1.7041975308641975) internal successors, (58667), 35093 states have internal predecessors, (58667), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 06:48:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36853 states to 36853 states and 65503 transitions. [2025-03-08 06:48:53,528 INFO L78 Accepts]: Start accepts. Automaton has 36853 states and 65503 transitions. Word has length 176 [2025-03-08 06:48:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:53,528 INFO L471 AbstractCegarLoop]: Abstraction has 36853 states and 65503 transitions. [2025-03-08 06:48:53,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 36853 states and 65503 transitions. [2025-03-08 06:48:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:53,541 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:53,541 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:53,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:48:53,541 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:53,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1034203115, now seen corresponding path program 1 times [2025-03-08 06:48:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131322557] [2025-03-08 06:48:53,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:53,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:53,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:53,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:53,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131322557] [2025-03-08 06:48:53,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131322557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:53,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:53,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:48:53,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716904091] [2025-03-08 06:48:53,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:53,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:48:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:53,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:48:53,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:48:53,641 INFO L87 Difference]: Start difference. First operand 36853 states and 65503 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:54,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:54,816 INFO L93 Difference]: Finished difference Result 83992 states and 153902 transitions. [2025-03-08 06:48:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:48:54,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:54,989 INFO L225 Difference]: With dead ends: 83992 [2025-03-08 06:48:54,989 INFO L226 Difference]: Without dead ends: 49280 [2025-03-08 06:48:55,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:55,084 INFO L435 NwaCegarLoop]: 4353 mSDtfsCounter, 4785 mSDsluCounter, 8587 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 12940 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:55,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4805 Valid, 12940 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:48:55,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49280 states. [2025-03-08 06:48:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49280 to 36853. [2025-03-08 06:48:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36853 states, 34425 states have (on average 1.7023093681917212) internal successors, (58602), 35093 states have internal predecessors, (58602), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 06:48:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36853 states to 36853 states and 65438 transitions. [2025-03-08 06:48:57,174 INFO L78 Accepts]: Start accepts. Automaton has 36853 states and 65438 transitions. Word has length 176 [2025-03-08 06:48:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:48:57,175 INFO L471 AbstractCegarLoop]: Abstraction has 36853 states and 65438 transitions. [2025-03-08 06:48:57,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 36853 states and 65438 transitions. [2025-03-08 06:48:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:48:57,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:48:57,186 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, 1, 1, 1, 1, 1] [2025-03-08 06:48:57,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:48:57,186 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:48:57,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:48:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -900003284, now seen corresponding path program 1 times [2025-03-08 06:48:57,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:48:57,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913452968] [2025-03-08 06:48:57,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:48:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:48:57,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:48:57,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:48:57,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:48:57,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:48:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:48:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:48:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913452968] [2025-03-08 06:48:57,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913452968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:48:57,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:48:57,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:48:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003749699] [2025-03-08 06:48:57,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:48:57,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:48:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:48:57,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:48:57,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:48:57,302 INFO L87 Difference]: Start difference. First operand 36853 states and 65438 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:48:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:48:58,897 INFO L93 Difference]: Finished difference Result 83261 states and 152310 transitions. [2025-03-08 06:48:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:48:58,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:48:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:48:59,047 INFO L225 Difference]: With dead ends: 83261 [2025-03-08 06:48:59,047 INFO L226 Difference]: Without dead ends: 48549 [2025-03-08 06:48:59,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:48:59,106 INFO L435 NwaCegarLoop]: 4383 mSDtfsCounter, 4751 mSDsluCounter, 8615 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 12998 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:48:59,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4771 Valid, 12998 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:48:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48549 states. [2025-03-08 06:49:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48549 to 36853. [2025-03-08 06:49:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36853 states, 34425 states have (on average 1.7004212055192447) internal successors, (58537), 35093 states have internal predecessors, (58537), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 06:49:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36853 states to 36853 states and 65373 transitions. [2025-03-08 06:49:00,420 INFO L78 Accepts]: Start accepts. Automaton has 36853 states and 65373 transitions. Word has length 176 [2025-03-08 06:49:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:00,421 INFO L471 AbstractCegarLoop]: Abstraction has 36853 states and 65373 transitions. [2025-03-08 06:49:00,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 36853 states and 65373 transitions. [2025-03-08 06:49:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:49:00,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:00,430 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, 1, 1, 1, 1, 1] [2025-03-08 06:49:00,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 06:49:00,430 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:00,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash 977265611, now seen corresponding path program 1 times [2025-03-08 06:49:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:00,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599292281] [2025-03-08 06:49:00,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:00,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:49:00,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:49:00,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:00,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599292281] [2025-03-08 06:49:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599292281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032459630] [2025-03-08 06:49:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:00,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:00,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:00,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:00,500 INFO L87 Difference]: Start difference. First operand 36853 states and 65373 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:02,236 INFO L93 Difference]: Finished difference Result 82530 states and 150718 transitions. [2025-03-08 06:49:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:49:02,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:49:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:02,417 INFO L225 Difference]: With dead ends: 82530 [2025-03-08 06:49:02,418 INFO L226 Difference]: Without dead ends: 47818 [2025-03-08 06:49:02,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:02,518 INFO L435 NwaCegarLoop]: 4380 mSDtfsCounter, 4748 mSDsluCounter, 8610 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 12990 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:02,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 12990 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:49:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47818 states. [2025-03-08 06:49:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47818 to 36853. [2025-03-08 06:49:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36853 states, 34425 states have (on average 1.6985330428467684) internal successors, (58472), 35093 states have internal predecessors, (58472), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 06:49:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36853 states to 36853 states and 65308 transitions. [2025-03-08 06:49:04,718 INFO L78 Accepts]: Start accepts. Automaton has 36853 states and 65308 transitions. Word has length 176 [2025-03-08 06:49:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:04,719 INFO L471 AbstractCegarLoop]: Abstraction has 36853 states and 65308 transitions. [2025-03-08 06:49:04,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36853 states and 65308 transitions. [2025-03-08 06:49:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:49:04,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:04,728 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, 1, 1, 1, 1, 1] [2025-03-08 06:49:04,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 06:49:04,728 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:04,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 899275340, now seen corresponding path program 1 times [2025-03-08 06:49:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203231474] [2025-03-08 06:49:04,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:04,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:49:04,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:49:04,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:04,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:04,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203231474] [2025-03-08 06:49:04,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203231474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:04,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:04,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:49:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221717026] [2025-03-08 06:49:04,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:04,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:49:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:04,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:49:04,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:49:04,817 INFO L87 Difference]: Start difference. First operand 36853 states and 65308 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:49:07,310 INFO L93 Difference]: Finished difference Result 122738 states and 224324 transitions. [2025-03-08 06:49:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:49:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 176 [2025-03-08 06:49:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:49:07,622 INFO L225 Difference]: With dead ends: 122738 [2025-03-08 06:49:07,623 INFO L226 Difference]: Without dead ends: 88026 [2025-03-08 06:49:07,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:49:07,713 INFO L435 NwaCegarLoop]: 4682 mSDtfsCounter, 5413 mSDsluCounter, 14101 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 18783 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 06:49:07,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5446 Valid, 18783 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 06:49:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88026 states. [2025-03-08 06:49:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88026 to 81171. [2025-03-08 06:49:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81171 states, 75685 states have (on average 1.7226927396445795) internal successors, (130382), 77747 states have internal predecessors, (130382), 2650 states have call successors, (2650), 774 states have call predecessors, (2650), 2834 states have return successors, (19034), 2777 states have call predecessors, (19034), 2650 states have call successors, (19034) [2025-03-08 06:49:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81171 states to 81171 states and 152066 transitions. [2025-03-08 06:49:11,084 INFO L78 Accepts]: Start accepts. Automaton has 81171 states and 152066 transitions. Word has length 176 [2025-03-08 06:49:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:49:11,084 INFO L471 AbstractCegarLoop]: Abstraction has 81171 states and 152066 transitions. [2025-03-08 06:49:11,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:49:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 81171 states and 152066 transitions. [2025-03-08 06:49:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:49:11,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:49:11,105 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, 1, 1, 1, 1, 1] [2025-03-08 06:49:11,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 06:49:11,105 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:49:11,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:49:11,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1042903125, now seen corresponding path program 1 times [2025-03-08 06:49:11,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:49:11,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864460819] [2025-03-08 06:49:11,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:49:11,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:49:11,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:49:11,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:49:11,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:49:11,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:49:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:49:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:49:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864460819] [2025-03-08 06:49:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864460819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:49:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:49:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:49:11,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106134286] [2025-03-08 06:49:11,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:49:11,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:49:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:49:11,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:49:11,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:49:11,208 INFO L87 Difference]: Start difference. First operand 81171 states and 152066 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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)