./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.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 21399f6c1c6de0b812a418410b61643449f7872d7a63a6928748a1ba61200764 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:03:37,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:03:37,463 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:03:37,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:03:37,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:03:37,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:03:37,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:03:37,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:03:37,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:03:37,493 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:03:37,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:03:37,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:03:37,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:03:37,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:03:37,494 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:03:37,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:03:37,495 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:03:37,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:03:37,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:03:37,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:03:37,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:03:37,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:03:37,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:03:37,496 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:03:37,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:03:37,497 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 -> 21399f6c1c6de0b812a418410b61643449f7872d7a63a6928748a1ba61200764 [2025-03-16 20:03:37,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:03:37,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:03:37,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:03:37,745 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:03:37,745 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:03:37,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c [2025-03-16 20:03:38,927 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4766e6aab/8e7e1ed58ba84fcd9b5925d3ba9d4ead/FLAG63571d00a [2025-03-16 20:03:39,522 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:03:39,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-2.c [2025-03-16 20:03:39,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4766e6aab/8e7e1ed58ba84fcd9b5925d3ba9d4ead/FLAG63571d00a [2025-03-16 20:03:39,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4766e6aab/8e7e1ed58ba84fcd9b5925d3ba9d4ead [2025-03-16 20:03:39,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:03:39,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:03:39,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:03:39,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:03:39,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:03:39,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:03:39" (1/1) ... [2025-03-16 20:03:39,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af8c9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:39, skipping insertion in model container [2025-03-16 20:03:39,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:03:39" (1/1) ... [2025-03-16 20:03:40,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:03:41,191 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_label46+token_ring.05.cil-2.c[382357,382370] [2025-03-16 20:03:41,218 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_label46+token_ring.05.cil-2.c[383339,383352] [2025-03-16 20:03:41,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:03:41,441 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:03:41,940 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_label46+token_ring.05.cil-2.c[382357,382370] [2025-03-16 20:03:41,943 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_label46+token_ring.05.cil-2.c[383339,383352] [2025-03-16 20:03:41,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:03:42,004 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:03:42,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42 WrapperNode [2025-03-16 20:03:42,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:03:42,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:03:42,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:03:42,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:03:42,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,369 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12792 [2025-03-16 20:03:42,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:03:42,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:03:42,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:03:42,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:03:42,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,577 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:03:42,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,685 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:03:42,806 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:03:42,806 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:03:42,806 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:03:42,807 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (1/1) ... [2025-03-16 20:03:42,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:03:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:03:42,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:03:42,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:03:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:03:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:03:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:03:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:03:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:03:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:03:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:03:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 20:03:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 20:03:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:03:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:03:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:03:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:03:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:03:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:03:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:03:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:03:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:03:42,953 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:03:42,955 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:03:49,266 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:03:49,266 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:03:49,267 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:03:49,267 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:03:49,267 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:03:49,267 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:03:49,267 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:03:49,461 INFO L? ?]: Removed 1709 outVars from TransFormulas that were not future-live. [2025-03-16 20:03:49,461 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:03:49,516 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:03:49,517 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:03:49,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:03:49 BoogieIcfgContainer [2025-03-16 20:03:49,518 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:03:49,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:03:49,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:03:49,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:03:49,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:03:39" (1/3) ... [2025-03-16 20:03:49,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358e35e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:03:49, skipping insertion in model container [2025-03-16 20:03:49,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:03:42" (2/3) ... [2025-03-16 20:03:49,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358e35e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:03:49, skipping insertion in model container [2025-03-16 20:03:49,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:03:49" (3/3) ... [2025-03-16 20:03:49,526 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.05.cil-2.c [2025-03-16 20:03:49,537 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:03:49,539 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+token_ring.05.cil-2.c that has 8 procedures, 2325 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-03-16 20:03:49,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:03:49,634 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;@45d243f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:03:49,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:03:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 2325 states, 2295 states have (on average 1.8753812636165577) internal successors, (4304), 2299 states have internal predecessors, (4304), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-16 20:03:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:49,652 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:49,652 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] [2025-03-16 20:03:49,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:49,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1087901979, now seen corresponding path program 1 times [2025-03-16 20:03:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:49,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835109595] [2025-03-16 20:03:49,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:49,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:49,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:49,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:49,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:49,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835109595] [2025-03-16 20:03:50,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835109595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:50,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:50,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:03:50,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816944548] [2025-03-16 20:03:50,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:50,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:03:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:50,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:03:50,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:03:50,182 INFO L87 Difference]: Start difference. First operand has 2325 states, 2295 states have (on average 1.8753812636165577) internal successors, (4304), 2299 states have internal predecessors, (4304), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:50,746 INFO L93 Difference]: Finished difference Result 4847 states and 9017 transitions. [2025-03-16 20:03:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:03:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:50,774 INFO L225 Difference]: With dead ends: 4847 [2025-03-16 20:03:50,775 INFO L226 Difference]: Without dead ends: 2525 [2025-03-16 20:03:50,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:50,789 INFO L435 NwaCegarLoop]: 4208 mSDtfsCounter, 4513 mSDsluCounter, 8539 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 12747 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:50,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4526 Valid, 12747 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:03:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2025-03-16 20:03:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2508. [2025-03-16 20:03:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2458 states have (on average 1.8291293734743694) internal successors, (4496), 2462 states have internal predecessors, (4496), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:03:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 4565 transitions. [2025-03-16 20:03:50,917 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 4565 transitions. Word has length 92 [2025-03-16 20:03:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:50,918 INFO L471 AbstractCegarLoop]: Abstraction has 2508 states and 4565 transitions. [2025-03-16 20:03:50,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 4565 transitions. [2025-03-16 20:03:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:50,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:50,923 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] [2025-03-16 20:03:50,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:03:50,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:50,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1518734937, now seen corresponding path program 1 times [2025-03-16 20:03:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:50,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421533412] [2025-03-16 20:03:50,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:50,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:50,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:50,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:50,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:51,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421533412] [2025-03-16 20:03:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421533412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:51,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:51,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:03:51,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958598984] [2025-03-16 20:03:51,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:51,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:03:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:51,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:03:51,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:03:51,101 INFO L87 Difference]: Start difference. First operand 2508 states and 4565 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:51,351 INFO L93 Difference]: Finished difference Result 2920 states and 5223 transitions. [2025-03-16 20:03:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:03:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:51,363 INFO L225 Difference]: With dead ends: 2920 [2025-03-16 20:03:51,363 INFO L226 Difference]: Without dead ends: 2544 [2025-03-16 20:03:51,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:51,366 INFO L435 NwaCegarLoop]: 4190 mSDtfsCounter, 4355 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4368 SdHoareTripleChecker+Valid, 12481 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:51,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4368 Valid, 12481 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:03:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2025-03-16 20:03:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2508. [2025-03-16 20:03:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2458 states have (on average 1.8283157038242475) internal successors, (4494), 2462 states have internal predecessors, (4494), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:03:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 4563 transitions. [2025-03-16 20:03:51,436 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 4563 transitions. Word has length 92 [2025-03-16 20:03:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:51,437 INFO L471 AbstractCegarLoop]: Abstraction has 2508 states and 4563 transitions. [2025-03-16 20:03:51,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 4563 transitions. [2025-03-16 20:03:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:51,441 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:51,441 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] [2025-03-16 20:03:51,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:03:51,442 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:51,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1532267738, now seen corresponding path program 1 times [2025-03-16 20:03:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314335931] [2025-03-16 20:03:51,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:51,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:51,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:51,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:51,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:51,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314335931] [2025-03-16 20:03:51,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314335931] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:51,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:51,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:03:51,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475584065] [2025-03-16 20:03:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:51,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:03:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:51,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:03:51,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:51,574 INFO L87 Difference]: Start difference. First operand 2508 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:52,019 INFO L93 Difference]: Finished difference Result 3121 states and 5530 transitions. [2025-03-16 20:03:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:03:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:52,033 INFO L225 Difference]: With dead ends: 3121 [2025-03-16 20:03:52,034 INFO L226 Difference]: Without dead ends: 2745 [2025-03-16 20:03:52,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:03:52,038 INFO L435 NwaCegarLoop]: 4360 mSDtfsCounter, 4494 mSDsluCounter, 13069 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 17429 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:52,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 17429 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:03:52,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2025-03-16 20:03:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2684. [2025-03-16 20:03:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2613 states have (on average 1.8120933792575584) internal successors, (4735), 2618 states have internal predecessors, (4735), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2025-03-16 20:03:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4835 transitions. [2025-03-16 20:03:52,116 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4835 transitions. Word has length 92 [2025-03-16 20:03:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:52,117 INFO L471 AbstractCegarLoop]: Abstraction has 2684 states and 4835 transitions. [2025-03-16 20:03:52,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4835 transitions. [2025-03-16 20:03:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:52,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:52,120 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] [2025-03-16 20:03:52,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:03:52,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:52,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1653884359, now seen corresponding path program 1 times [2025-03-16 20:03:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:52,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673078687] [2025-03-16 20:03:52,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:52,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:52,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:52,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:52,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673078687] [2025-03-16 20:03:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673078687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:52,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:03:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363311959] [2025-03-16 20:03:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:52,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:03:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:52,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:03:52,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:52,276 INFO L87 Difference]: Start difference. First operand 2684 states and 4835 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:52,869 INFO L93 Difference]: Finished difference Result 3674 states and 6395 transitions. [2025-03-16 20:03:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:03:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:52,883 INFO L225 Difference]: With dead ends: 3674 [2025-03-16 20:03:52,883 INFO L226 Difference]: Without dead ends: 3122 [2025-03-16 20:03:52,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:03:52,887 INFO L435 NwaCegarLoop]: 4356 mSDtfsCounter, 4489 mSDsluCounter, 13057 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:52,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 17413 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:03:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2025-03-16 20:03:52,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3055. [2025-03-16 20:03:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 2940 states have (on average 1.7850340136054421) internal successors, (5248), 2949 states have internal predecessors, (5248), 77 states have call successors, (77), 31 states have call predecessors, (77), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2025-03-16 20:03:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 5416 transitions. [2025-03-16 20:03:52,990 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 5416 transitions. Word has length 92 [2025-03-16 20:03:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:52,990 INFO L471 AbstractCegarLoop]: Abstraction has 3055 states and 5416 transitions. [2025-03-16 20:03:52,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 5416 transitions. [2025-03-16 20:03:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:52,992 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:52,992 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] [2025-03-16 20:03:52,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:03:52,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:52,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash -786832134, now seen corresponding path program 1 times [2025-03-16 20:03:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119305785] [2025-03-16 20:03:52,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:53,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:53,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:53,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:53,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:53,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119305785] [2025-03-16 20:03:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119305785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:53,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:03:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666021002] [2025-03-16 20:03:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:53,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:03:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:53,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:03:53,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:53,113 INFO L87 Difference]: Start difference. First operand 3055 states and 5416 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:53,636 INFO L93 Difference]: Finished difference Result 4851 states and 8270 transitions. [2025-03-16 20:03:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:03:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:53,653 INFO L225 Difference]: With dead ends: 4851 [2025-03-16 20:03:53,653 INFO L226 Difference]: Without dead ends: 3928 [2025-03-16 20:03:53,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:03:53,659 INFO L435 NwaCegarLoop]: 4353 mSDtfsCounter, 4484 mSDsluCounter, 13048 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 17401 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:53,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 17401 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:03:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2025-03-16 20:03:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3848. [2025-03-16 20:03:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3639 states have (on average 1.7466336905743336) internal successors, (6356), 3662 states have internal predecessors, (6356), 133 states have call successors, (133), 55 states have call predecessors, (133), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2025-03-16 20:03:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 6684 transitions. [2025-03-16 20:03:53,819 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 6684 transitions. Word has length 92 [2025-03-16 20:03:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:53,819 INFO L471 AbstractCegarLoop]: Abstraction has 3848 states and 6684 transitions. [2025-03-16 20:03:53,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 6684 transitions. [2025-03-16 20:03:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:53,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:53,824 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] [2025-03-16 20:03:53,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:03:53,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:53,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -343220711, now seen corresponding path program 1 times [2025-03-16 20:03:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010010727] [2025-03-16 20:03:53,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:53,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:53,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:53,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:53,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:53,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010010727] [2025-03-16 20:03:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010010727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:53,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:53,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:03:53,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659856747] [2025-03-16 20:03:53,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:53,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:03:53,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:53,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:03:53,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:53,948 INFO L87 Difference]: Start difference. First operand 3848 states and 6684 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:54,436 INFO L93 Difference]: Finished difference Result 7390 states and 12432 transitions. [2025-03-16 20:03:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:03:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:54,459 INFO L225 Difference]: With dead ends: 7390 [2025-03-16 20:03:54,460 INFO L226 Difference]: Without dead ends: 5674 [2025-03-16 20:03:54,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:03:54,469 INFO L435 NwaCegarLoop]: 4350 mSDtfsCounter, 4479 mSDsluCounter, 13039 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 17389 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:54,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4492 Valid, 17389 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:03:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2025-03-16 20:03:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5569. [2025-03-16 20:03:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5154 states have (on average 1.7043073341094295) internal successors, (8784), 5223 states have internal predecessors, (8784), 245 states have call successors, (245), 103 states have call predecessors, (245), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2025-03-16 20:03:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 9528 transitions. [2025-03-16 20:03:54,733 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 9528 transitions. Word has length 92 [2025-03-16 20:03:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:54,734 INFO L471 AbstractCegarLoop]: Abstraction has 5569 states and 9528 transitions. [2025-03-16 20:03:54,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 9528 transitions. [2025-03-16 20:03:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:54,737 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:54,737 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] [2025-03-16 20:03:54,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:03:54,738 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:54,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1298741990, now seen corresponding path program 1 times [2025-03-16 20:03:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493191807] [2025-03-16 20:03:54,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:54,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:54,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:54,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:54,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:54,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493191807] [2025-03-16 20:03:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493191807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:54,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:54,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:03:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714612630] [2025-03-16 20:03:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:54,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:03:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:54,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:03:54,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:54,839 INFO L87 Difference]: Start difference. First operand 5569 states and 9528 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:55,460 INFO L93 Difference]: Finished difference Result 13493 states and 22835 transitions. [2025-03-16 20:03:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:03:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:55,508 INFO L225 Difference]: With dead ends: 13493 [2025-03-16 20:03:55,508 INFO L226 Difference]: Without dead ends: 10056 [2025-03-16 20:03:55,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:03:55,524 INFO L435 NwaCegarLoop]: 4345 mSDtfsCounter, 4620 mSDsluCounter, 13019 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 17364 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:55,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 17364 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:03:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2025-03-16 20:03:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 9314. [2025-03-16 20:03:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9314 states, 8449 states have (on average 1.6735708367854183) internal successors, (14140), 8664 states have internal predecessors, (14140), 453 states have call successors, (453), 199 states have call predecessors, (453), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2025-03-16 20:03:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9314 states to 9314 states and 16068 transitions. [2025-03-16 20:03:55,928 INFO L78 Accepts]: Start accepts. Automaton has 9314 states and 16068 transitions. Word has length 92 [2025-03-16 20:03:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:55,928 INFO L471 AbstractCegarLoop]: Abstraction has 9314 states and 16068 transitions. [2025-03-16 20:03:55,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9314 states and 16068 transitions. [2025-03-16 20:03:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:55,935 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:55,935 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] [2025-03-16 20:03:55,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:03:55,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:55,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 887192057, now seen corresponding path program 1 times [2025-03-16 20:03:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060369587] [2025-03-16 20:03:55,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:55,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:55,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:55,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:55,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060369587] [2025-03-16 20:03:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060369587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:56,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:56,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:03:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294233] [2025-03-16 20:03:56,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:56,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:03:56,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:56,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:03:56,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:56,039 INFO L87 Difference]: Start difference. First operand 9314 states and 16068 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:56,878 INFO L93 Difference]: Finished difference Result 25578 states and 45141 transitions. [2025-03-16 20:03:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:03:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:56,940 INFO L225 Difference]: With dead ends: 25578 [2025-03-16 20:03:56,945 INFO L226 Difference]: Without dead ends: 18396 [2025-03-16 20:03:56,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:03:56,965 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4558 mSDsluCounter, 13000 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 17338 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:56,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 17338 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:03:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2025-03-16 20:03:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 17404. [2025-03-16 20:03:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 15493 states have (on average 1.653262763828826) internal successors, (25614), 16162 states have internal predecessors, (25614), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:03:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 31414 transitions. [2025-03-16 20:03:57,753 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 31414 transitions. Word has length 92 [2025-03-16 20:03:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:57,753 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 31414 transitions. [2025-03-16 20:03:57,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 31414 transitions. [2025-03-16 20:03:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:57,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:57,765 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] [2025-03-16 20:03:57,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:03:57,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:57,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1841420952, now seen corresponding path program 1 times [2025-03-16 20:03:57,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:57,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222305913] [2025-03-16 20:03:57,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:57,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:57,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:57,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:57,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:57,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:57,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:57,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222305913] [2025-03-16 20:03:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222305913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:57,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:57,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:03:57,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044432409] [2025-03-16 20:03:57,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:57,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:03:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:57,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:03:57,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:03:57,845 INFO L87 Difference]: Start difference. First operand 17404 states and 31414 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:03:58,705 INFO L93 Difference]: Finished difference Result 35600 states and 66734 transitions. [2025-03-16 20:03:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:03:58,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:03:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:03:58,794 INFO L225 Difference]: With dead ends: 35600 [2025-03-16 20:03:58,794 INFO L226 Difference]: Without dead ends: 20328 [2025-03-16 20:03:58,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:03:58,940 INFO L435 NwaCegarLoop]: 4173 mSDtfsCounter, 4343 mSDsluCounter, 8256 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 12429 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:03:58,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4356 Valid, 12429 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:03:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20328 states. [2025-03-16 20:03:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20328 to 17404. [2025-03-16 20:03:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 15493 states have (on average 1.649067320725489) internal successors, (25549), 16162 states have internal predecessors, (25549), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:03:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 31349 transitions. [2025-03-16 20:03:59,653 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 31349 transitions. Word has length 92 [2025-03-16 20:03:59,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:03:59,653 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 31349 transitions. [2025-03-16 20:03:59,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:03:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 31349 transitions. [2025-03-16 20:03:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:03:59,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:03:59,663 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] [2025-03-16 20:03:59,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:03:59,664 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:03:59,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:03:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1595107865, now seen corresponding path program 1 times [2025-03-16 20:03:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:03:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205944733] [2025-03-16 20:03:59,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:03:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:03:59,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:03:59,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:03:59,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:03:59,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:03:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:03:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:03:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205944733] [2025-03-16 20:03:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205944733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:03:59,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:03:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:03:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177594521] [2025-03-16 20:03:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:03:59,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:03:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:03:59,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:03:59,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:03:59,743 INFO L87 Difference]: Start difference. First operand 17404 states and 31349 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:04:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:04:00,498 INFO L93 Difference]: Finished difference Result 34869 states and 65142 transitions. [2025-03-16 20:04:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:04:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:04:00,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:04:00,578 INFO L225 Difference]: With dead ends: 34869 [2025-03-16 20:04:00,578 INFO L226 Difference]: Without dead ends: 19597 [2025-03-16 20:04:00,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:04:00,617 INFO L435 NwaCegarLoop]: 4170 mSDtfsCounter, 4340 mSDsluCounter, 8251 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 12421 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:04:00,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 12421 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:04:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19597 states. [2025-03-16 20:04:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19597 to 17404. [2025-03-16 20:04:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 15493 states have (on average 1.644871877622152) internal successors, (25484), 16162 states have internal predecessors, (25484), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:04:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 31284 transitions. [2025-03-16 20:04:01,441 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 31284 transitions. Word has length 92 [2025-03-16 20:04:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:04:01,441 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 31284 transitions. [2025-03-16 20:04:01,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:04:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 31284 transitions. [2025-03-16 20:04:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:04:01,450 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:04:01,450 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] [2025-03-16 20:04:01,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:04:01,450 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:04:01,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:04:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash -75405704, now seen corresponding path program 1 times [2025-03-16 20:04:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:04:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152180058] [2025-03-16 20:04:01,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:04:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:04:01,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:04:01,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:04:01,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:04:01,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:04:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:04:01,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:04:01,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152180058] [2025-03-16 20:04:01,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152180058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:04:01,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:04:01,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:04:01,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811852446] [2025-03-16 20:04:01,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:04:01,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:04:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:04:01,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:04:01,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:04:01,604 INFO L87 Difference]: Start difference. First operand 17404 states and 31284 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:04:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:04:03,760 INFO L93 Difference]: Finished difference Result 49602 states and 95223 transitions. [2025-03-16 20:04:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:04:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:04:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:04:03,911 INFO L225 Difference]: With dead ends: 49602 [2025-03-16 20:04:03,911 INFO L226 Difference]: Without dead ends: 34330 [2025-03-16 20:04:03,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:04:03,952 INFO L435 NwaCegarLoop]: 4325 mSDtfsCounter, 4456 mSDsluCounter, 12963 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 17288 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:04:03,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4475 Valid, 17288 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:04:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34330 states. [2025-03-16 20:04:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34330 to 33731. [2025-03-16 20:04:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33731 states, 29274 states have (on average 1.6135820181731229) internal successors, (47236), 31337 states have internal predecessors, (47236), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2025-03-16 20:04:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33731 states to 33731 states and 66860 transitions. [2025-03-16 20:04:05,686 INFO L78 Accepts]: Start accepts. Automaton has 33731 states and 66860 transitions. Word has length 92 [2025-03-16 20:04:05,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:04:05,686 INFO L471 AbstractCegarLoop]: Abstraction has 33731 states and 66860 transitions. [2025-03-16 20:04:05,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:04:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 33731 states and 66860 transitions. [2025-03-16 20:04:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:04:05,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:04:05,705 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] [2025-03-16 20:04:05,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:04:05,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:04:05,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:04:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash -683482567, now seen corresponding path program 1 times [2025-03-16 20:04:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:04:05,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541990656] [2025-03-16 20:04:05,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:04:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:04:05,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:04:05,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:04:05,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:04:05,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:04:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:04:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:04:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541990656] [2025-03-16 20:04:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541990656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:04:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:04:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:04:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059593248] [2025-03-16 20:04:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:04:05,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:04:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:04:05,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:04:05,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:04:05,765 INFO L87 Difference]: Start difference. First operand 33731 states and 66860 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:04:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:04:08,596 INFO L93 Difference]: Finished difference Result 95761 states and 191980 transitions. [2025-03-16 20:04:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:04:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2025-03-16 20:04:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:04:08,846 INFO L225 Difference]: With dead ends: 95761 [2025-03-16 20:04:08,847 INFO L226 Difference]: Without dead ends: 64163 [2025-03-16 20:04:08,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:04:08,930 INFO L435 NwaCegarLoop]: 4515 mSDtfsCounter, 4476 mSDsluCounter, 4442 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 8957 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:04:08,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 8957 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:04:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64163 states. [2025-03-16 20:04:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64163 to 64034. [2025-03-16 20:04:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64034 states, 55128 states have (on average 1.5877775359164128) internal successors, (87531), 59380 states have internal predecessors, (87531), 3236 states have call successors, (3236), 1549 states have call predecessors, (3236), 5668 states have return successors, (35875), 3232 states have call predecessors, (35875), 3234 states have call successors, (35875) [2025-03-16 20:04:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64034 states to 64034 states and 126642 transitions. [2025-03-16 20:04:12,653 INFO L78 Accepts]: Start accepts. Automaton has 64034 states and 126642 transitions. Word has length 92 [2025-03-16 20:04:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:04:12,653 INFO L471 AbstractCegarLoop]: Abstraction has 64034 states and 126642 transitions. [2025-03-16 20:04:12,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:04:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 64034 states and 126642 transitions. [2025-03-16 20:04:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-16 20:04:12,737 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:04:12,737 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:04:12,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:04:12,738 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:04:12,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:04:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2009924230, now seen corresponding path program 1 times [2025-03-16 20:04:12,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:04:12,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610562784] [2025-03-16 20:04:12,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:04:12,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:04:12,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-16 20:04:12,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-16 20:04:12,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:04:12,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:04:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 20:04:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:04:12,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610562784] [2025-03-16 20:04:12,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610562784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:04:12,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576325282] [2025-03-16 20:04:12,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:04:12,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:04:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:04:12,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:04:12,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 20:04:12,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-16 20:04:12,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-16 20:04:12,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:04:12,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:04:12,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:04:12,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:04:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 20:04:12,992 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:04:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576325282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:04:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:04:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:04:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24631333] [2025-03-16 20:04:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:04:12,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:04:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:04:12,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:04:12,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:04:12,994 INFO L87 Difference]: Start difference. First operand 64034 states and 126642 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:04:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:04:18,584 INFO L93 Difference]: Finished difference Result 186545 states and 371458 transitions. [2025-03-16 20:04:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:04:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2025-03-16 20:04:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:04:19,157 INFO L225 Difference]: With dead ends: 186545 [2025-03-16 20:04:19,157 INFO L226 Difference]: Without dead ends: 124644 [2025-03-16 20:04:19,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:04:19,337 INFO L435 NwaCegarLoop]: 4258 mSDtfsCounter, 4212 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 4532 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:04:19,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4212 Valid, 4532 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:04:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124644 states.