./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-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 3a629e5533750136bdc4ecf4cf9ae4f163f3dcd9918add7f5bb2c2e476f05d0e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:37:55,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:37:55,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:37:55,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:37:55,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:37:55,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:37:55,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:37:55,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:37:55,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:37:55,758 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:37:55,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:37:55,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:37:55,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:37:55,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:37:55,758 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:37:55,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:37:55,759 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:37:55,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:37:55,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:37:55,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:37:55,760 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 -> 3a629e5533750136bdc4ecf4cf9ae4f163f3dcd9918add7f5bb2c2e476f05d0e [2025-03-03 15:37:56,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:37:56,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:37:56,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:37:56,015 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:37:56,016 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:37:56,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c [2025-03-03 15:37:57,137 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d1e9630/6c1ff2c1c7bb4f559b3deacbbf350573/FLAG298a2002b [2025-03-03 15:37:57,739 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:37:57,741 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c [2025-03-03 15:37:57,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d1e9630/6c1ff2c1c7bb4f559b3deacbbf350573/FLAG298a2002b [2025-03-03 15:37:57,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d1e9630/6c1ff2c1c7bb4f559b3deacbbf350573 [2025-03-03 15:37:57,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:37:57,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:37:57,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:37:57,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:37:57,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:37:57,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:37:57" (1/1) ... [2025-03-03 15:37:57,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f42b39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:57, skipping insertion in model container [2025-03-03 15:37:57,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:37:57" (1/1) ... [2025-03-03 15:37:57,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:37:58,972 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[378560,378573] [2025-03-03 15:37:58,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[383339,383352] [2025-03-03 15:37:59,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:37:59,176 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:37:59,730 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[378560,378573] [2025-03-03 15:37:59,740 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[383339,383352] [2025-03-03 15:37:59,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:37:59,794 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:37:59,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59 WrapperNode [2025-03-03 15:37:59,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:37:59,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:37:59,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:37:59,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:37:59,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:37:59,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,143 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12735 [2025-03-03 15:38:00,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:38:00,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:38:00,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:38:00,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:38:00,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,299 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]. [2025-03-03 15:38:00,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,402 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:38:00,486 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:38:00,486 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:38:00,486 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:38:00,487 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (1/1) ... [2025-03-03 15:38:00,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:38:00,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:38:00,512 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) [2025-03-03 15:38:00,514 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 [2025-03-03 15:38:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:38:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-03 15:38:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-03 15:38:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-03 15:38:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-03 15:38:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-03 15:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-03 15:38:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-03 15:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-03 15:38:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-03 15:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-03 15:38:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-03 15:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-03 15:38:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-03 15:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-03 15:38:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:38:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:38:00,597 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:38:00,598 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:38:06,594 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-03 15:38:06,595 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-03 15:38:06,595 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-03 15:38:06,595 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-03 15:38:06,596 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-03 15:38:06,596 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-03 15:38:06,596 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-03 15:38:06,749 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2025-03-03 15:38:06,749 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:38:06,793 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:38:06,798 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:38:06,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:38:06 BoogieIcfgContainer [2025-03-03 15:38:06,798 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:38:06,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:38:06,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:38:06,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:38:06,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:37:57" (1/3) ... [2025-03-03 15:38:06,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216413e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:38:06, skipping insertion in model container [2025-03-03 15:38:06,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:37:59" (2/3) ... [2025-03-03 15:38:06,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216413e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:38:06, skipping insertion in model container [2025-03-03 15:38:06,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:38:06" (3/3) ... [2025-03-03 15:38:06,807 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.04.cil-2.c [2025-03-03 15:38:06,819 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:38:06,822 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.04.cil-2.c that has 8 procedures, 2383 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2025-03-03 15:38:06,917 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:38:06,927 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;@3674c7ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:38:06,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-03 15:38:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 2383 states, 2353 states have (on average 1.8474288142796431) internal successors, (4347), 2358 states have internal predecessors, (4347), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 15:38:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:06,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:06,950 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] [2025-03-03 15:38:06,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:06,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1522854527, now seen corresponding path program 1 times [2025-03-03 15:38:06,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:06,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368195631] [2025-03-03 15:38:06,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:07,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:07,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:07,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:07,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368195631] [2025-03-03 15:38:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368195631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:07,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:07,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:38:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358754825] [2025-03-03 15:38:07,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:07,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:38:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:07,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:38:07,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:38:07,387 INFO L87 Difference]: Start difference. First operand has 2383 states, 2353 states have (on average 1.8474288142796431) internal successors, (4347), 2358 states have internal predecessors, (4347), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-03 15:38:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:07,890 INFO L93 Difference]: Finished difference Result 4954 states and 9071 transitions. [2025-03-03 15:38:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 15:38:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:07,916 INFO L225 Difference]: With dead ends: 4954 [2025-03-03 15:38:07,916 INFO L226 Difference]: Without dead ends: 2513 [2025-03-03 15:38:07,926 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 [2025-03-03 15:38:07,928 INFO L435 NwaCegarLoop]: 4255 mSDtfsCounter, 4520 mSDsluCounter, 8628 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4532 SdHoareTripleChecker+Valid, 12883 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:07,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4532 Valid, 12883 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:38:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2025-03-03 15:38:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2498. [2025-03-03 15:38:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2450 states have (on average 1.8191836734693878) internal successors, (4457), 2454 states have internal predecessors, (4457), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-03 15:38:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4522 transitions. [2025-03-03 15:38:08,131 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4522 transitions. Word has length 91 [2025-03-03 15:38:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:08,132 INFO L471 AbstractCegarLoop]: Abstraction has 2498 states and 4522 transitions. [2025-03-03 15:38:08,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-03 15:38:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4522 transitions. [2025-03-03 15:38:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:08,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:08,135 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] [2025-03-03 15:38:08,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 15:38:08,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:08,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1651981443, now seen corresponding path program 1 times [2025-03-03 15:38:08,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:08,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234722583] [2025-03-03 15:38:08,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:08,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:08,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:08,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:08,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:08,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234722583] [2025-03-03 15:38:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234722583] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:08,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:08,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:38:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721450558] [2025-03-03 15:38:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:08,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:38:08,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:08,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:38:08,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:38:08,338 INFO L87 Difference]: Start difference. First operand 2498 states and 4522 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:08,575 INFO L93 Difference]: Finished difference Result 2893 states and 5125 transitions. [2025-03-03 15:38:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:38:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:08,589 INFO L225 Difference]: With dead ends: 2893 [2025-03-03 15:38:08,590 INFO L226 Difference]: Without dead ends: 2528 [2025-03-03 15:38:08,591 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 [2025-03-03 15:38:08,592 INFO L435 NwaCegarLoop]: 4174 mSDtfsCounter, 4322 mSDsluCounter, 8269 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 12443 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:08,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 12443 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 15:38:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2025-03-03 15:38:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2498. [2025-03-03 15:38:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2450 states have (on average 1.8183673469387756) internal successors, (4455), 2454 states have internal predecessors, (4455), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-03 15:38:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4520 transitions. [2025-03-03 15:38:08,656 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4520 transitions. Word has length 91 [2025-03-03 15:38:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:08,656 INFO L471 AbstractCegarLoop]: Abstraction has 2498 states and 4520 transitions. [2025-03-03 15:38:08,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4520 transitions. [2025-03-03 15:38:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:08,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:08,658 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] [2025-03-03 15:38:08,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 15:38:08,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:08,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash -784929218, now seen corresponding path program 1 times [2025-03-03 15:38:08,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:08,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7967877] [2025-03-03 15:38:08,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:08,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:08,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:08,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:08,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:08,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7967877] [2025-03-03 15:38:08,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7967877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:08,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:08,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:38:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830007208] [2025-03-03 15:38:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:08,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:38:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:08,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:38:08,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:08,831 INFO L87 Difference]: Start difference. First operand 2498 states and 4520 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:09,230 INFO L93 Difference]: Finished difference Result 3085 states and 5404 transitions. [2025-03-03 15:38:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:38:09,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:09,240 INFO L225 Difference]: With dead ends: 3085 [2025-03-03 15:38:09,241 INFO L226 Difference]: Without dead ends: 2720 [2025-03-03 15:38:09,243 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 [2025-03-03 15:38:09,244 INFO L435 NwaCegarLoop]: 4334 mSDtfsCounter, 4438 mSDsluCounter, 12996 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 17330 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:09,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4450 Valid, 17330 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:38:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2025-03-03 15:38:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2669. [2025-03-03 15:38:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2601 states have (on average 1.7985390234525183) internal successors, (4678), 2606 states have internal predecessors, (4678), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2025-03-03 15:38:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 4772 transitions. [2025-03-03 15:38:09,308 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 4772 transitions. Word has length 91 [2025-03-03 15:38:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:09,308 INFO L471 AbstractCegarLoop]: Abstraction has 2669 states and 4772 transitions. [2025-03-03 15:38:09,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 4772 transitions. [2025-03-03 15:38:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:09,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:09,310 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] [2025-03-03 15:38:09,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 15:38:09,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -341317795, now seen corresponding path program 1 times [2025-03-03 15:38:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555382059] [2025-03-03 15:38:09,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:09,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:09,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:09,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:09,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555382059] [2025-03-03 15:38:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555382059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:09,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:38:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284283402] [2025-03-03 15:38:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:09,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:38:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:09,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:38:09,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:09,487 INFO L87 Difference]: Start difference. First operand 2669 states and 4772 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:10,060 INFO L93 Difference]: Finished difference Result 3617 states and 6197 transitions. [2025-03-03 15:38:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:38:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:10,076 INFO L225 Difference]: With dead ends: 3617 [2025-03-03 15:38:10,077 INFO L226 Difference]: Without dead ends: 3081 [2025-03-03 15:38:10,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 15:38:10,079 INFO L435 NwaCegarLoop]: 4330 mSDtfsCounter, 4433 mSDsluCounter, 12984 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:10,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 17314 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 15:38:10,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2025-03-03 15:38:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3026. [2025-03-03 15:38:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2916 states have (on average 1.7650891632373114) internal successors, (5147), 2925 states have internal predecessors, (5147), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2025-03-03 15:38:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 5305 transitions. [2025-03-03 15:38:10,151 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 5305 transitions. Word has length 91 [2025-03-03 15:38:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:10,151 INFO L471 AbstractCegarLoop]: Abstraction has 3026 states and 5305 transitions. [2025-03-03 15:38:10,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 5305 transitions. [2025-03-03 15:38:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:10,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:10,153 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] [2025-03-03 15:38:10,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 15:38:10,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:10,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1296839074, now seen corresponding path program 1 times [2025-03-03 15:38:10,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:10,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929072599] [2025-03-03 15:38:10,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:10,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:10,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:10,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:10,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929072599] [2025-03-03 15:38:10,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929072599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:10,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:10,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:38:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212091820] [2025-03-03 15:38:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:10,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:38:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:10,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:38:10,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:10,258 INFO L87 Difference]: Start difference. First operand 3026 states and 5305 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:10,678 INFO L93 Difference]: Finished difference Result 4736 states and 7896 transitions. [2025-03-03 15:38:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:38:10,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:10,696 INFO L225 Difference]: With dead ends: 4736 [2025-03-03 15:38:10,697 INFO L226 Difference]: Without dead ends: 3843 [2025-03-03 15:38:10,701 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 [2025-03-03 15:38:10,702 INFO L435 NwaCegarLoop]: 4327 mSDtfsCounter, 4428 mSDsluCounter, 12975 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:10,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 17302 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:38:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2025-03-03 15:38:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3779. [2025-03-03 15:38:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3579 states have (on average 1.7164012293936854) internal successors, (6143), 3602 states have internal predecessors, (6143), 124 states have call successors, (124), 55 states have call predecessors, (124), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2025-03-03 15:38:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 6453 transitions. [2025-03-03 15:38:10,821 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 6453 transitions. Word has length 91 [2025-03-03 15:38:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:10,821 INFO L471 AbstractCegarLoop]: Abstraction has 3779 states and 6453 transitions. [2025-03-03 15:38:10,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 6453 transitions. [2025-03-03 15:38:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:10,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:10,823 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] [2025-03-03 15:38:10,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 15:38:10,823 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:10,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash 889094973, now seen corresponding path program 1 times [2025-03-03 15:38:10,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:10,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024556178] [2025-03-03 15:38:10,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:10,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:10,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:10,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:10,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:10,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:10,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024556178] [2025-03-03 15:38:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024556178] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:10,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:10,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:38:10,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472075233] [2025-03-03 15:38:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:10,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:38:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:10,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:38:10,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:10,958 INFO L87 Difference]: Start difference. First operand 3779 states and 6453 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:11,425 INFO L93 Difference]: Finished difference Result 7375 states and 12003 transitions. [2025-03-03 15:38:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:38:11,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:11,449 INFO L225 Difference]: With dead ends: 7375 [2025-03-03 15:38:11,449 INFO L226 Difference]: Without dead ends: 5729 [2025-03-03 15:38:11,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 15:38:11,457 INFO L435 NwaCegarLoop]: 4322 mSDtfsCounter, 4557 mSDsluCounter, 12955 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:11,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4574 Valid, 17277 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:38:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5729 states. [2025-03-03 15:38:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5729 to 5360. [2025-03-03 15:38:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4970 states have (on average 1.6617706237424548) internal successors, (8259), 5039 states have internal predecessors, (8259), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-03 15:38:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8953 transitions. [2025-03-03 15:38:11,622 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8953 transitions. Word has length 91 [2025-03-03 15:38:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:11,622 INFO L471 AbstractCegarLoop]: Abstraction has 5360 states and 8953 transitions. [2025-03-03 15:38:11,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8953 transitions. [2025-03-03 15:38:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:11,626 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:11,626 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] [2025-03-03 15:38:11,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 15:38:11,627 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:11,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 405419646, now seen corresponding path program 1 times [2025-03-03 15:38:11,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:11,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593739075] [2025-03-03 15:38:11,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:11,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:11,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:11,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:11,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:11,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593739075] [2025-03-03 15:38:11,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593739075] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:11,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:11,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:38:11,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479461243] [2025-03-03 15:38:11,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:11,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:38:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:11,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:38:11,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:38:11,725 INFO L87 Difference]: Start difference. First operand 5360 states and 8953 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:12,034 INFO L93 Difference]: Finished difference Result 9002 states and 14802 transitions. [2025-03-03 15:38:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:38:12,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:12,064 INFO L225 Difference]: With dead ends: 9002 [2025-03-03 15:38:12,064 INFO L226 Difference]: Without dead ends: 5775 [2025-03-03 15:38:12,073 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 [2025-03-03 15:38:12,074 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4320 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 12391 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:12,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 12391 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 15:38:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2025-03-03 15:38:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5360. [2025-03-03 15:38:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4970 states have (on average 1.6583501006036216) internal successors, (8242), 5039 states have internal predecessors, (8242), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-03 15:38:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8936 transitions. [2025-03-03 15:38:12,250 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8936 transitions. Word has length 91 [2025-03-03 15:38:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:12,250 INFO L471 AbstractCegarLoop]: Abstraction has 5360 states and 8936 transitions. [2025-03-03 15:38:12,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8936 transitions. [2025-03-03 15:38:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:12,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:12,257 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] [2025-03-03 15:38:12,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 15:38:12,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:12,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1359648541, now seen corresponding path program 1 times [2025-03-03 15:38:12,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:12,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719717252] [2025-03-03 15:38:12,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:12,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:12,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:12,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:12,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:12,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:12,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719717252] [2025-03-03 15:38:12,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719717252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:12,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:12,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:38:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507597845] [2025-03-03 15:38:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:12,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:38:12,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:12,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:38:12,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:12,352 INFO L87 Difference]: Start difference. First operand 5360 states and 8936 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:13,197 INFO L93 Difference]: Finished difference Result 12330 states and 20074 transitions. [2025-03-03 15:38:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:38:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:13,229 INFO L225 Difference]: With dead ends: 12330 [2025-03-03 15:38:13,230 INFO L226 Difference]: Without dead ends: 9103 [2025-03-03 15:38:13,242 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 [2025-03-03 15:38:13,244 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 4484 mSDsluCounter, 12932 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 17246 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:13,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 17246 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 15:38:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9103 states. [2025-03-03 15:38:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9103 to 8660. [2025-03-03 15:38:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7844 states have (on average 1.6058133605303417) internal successors, (12596), 8059 states have internal predecessors, (12596), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-03 15:38:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14426 transitions. [2025-03-03 15:38:13,554 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14426 transitions. Word has length 91 [2025-03-03 15:38:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:13,554 INFO L471 AbstractCegarLoop]: Abstraction has 8660 states and 14426 transitions. [2025-03-03 15:38:13,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14426 transitions. [2025-03-03 15:38:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:13,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:13,561 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] [2025-03-03 15:38:13,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 15:38:13,561 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:13,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1113335454, now seen corresponding path program 1 times [2025-03-03 15:38:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749808944] [2025-03-03 15:38:13,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:13,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:13,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:13,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:13,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:13,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:13,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749808944] [2025-03-03 15:38:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749808944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:13,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:13,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:38:13,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106230587] [2025-03-03 15:38:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:13,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:38:13,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:13,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:38:13,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:38:13,632 INFO L87 Difference]: Start difference. First operand 8660 states and 14426 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:14,029 INFO L93 Difference]: Finished difference Result 15922 states and 26702 transitions. [2025-03-03 15:38:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:38:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:14,059 INFO L225 Difference]: With dead ends: 15922 [2025-03-03 15:38:14,060 INFO L226 Difference]: Without dead ends: 9395 [2025-03-03 15:38:14,075 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 [2025-03-03 15:38:14,076 INFO L435 NwaCegarLoop]: 4158 mSDtfsCounter, 4309 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 12395 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:14,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4321 Valid, 12395 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:38:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2025-03-03 15:38:14,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 8660. [2025-03-03 15:38:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7844 states have (on average 1.6016063233044364) internal successors, (12563), 8059 states have internal predecessors, (12563), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-03 15:38:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14393 transitions. [2025-03-03 15:38:14,647 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14393 transitions. Word has length 91 [2025-03-03 15:38:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:14,647 INFO L471 AbstractCegarLoop]: Abstraction has 8660 states and 14393 transitions. [2025-03-03 15:38:14,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14393 transitions. [2025-03-03 15:38:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:14,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:14,658 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] [2025-03-03 15:38:14,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 15:38:14,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:14,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -557178115, now seen corresponding path program 1 times [2025-03-03 15:38:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914859466] [2025-03-03 15:38:14,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:14,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:14,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:14,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:14,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:14,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914859466] [2025-03-03 15:38:14,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914859466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:14,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:14,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:38:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541902000] [2025-03-03 15:38:14,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:14,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:38:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:14,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:38:14,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:38:14,721 INFO L87 Difference]: Start difference. First operand 8660 states and 14393 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:15,129 INFO L93 Difference]: Finished difference Result 15677 states and 26146 transitions. [2025-03-03 15:38:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:38:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:15,161 INFO L225 Difference]: With dead ends: 15677 [2025-03-03 15:38:15,161 INFO L226 Difference]: Without dead ends: 9150 [2025-03-03 15:38:15,177 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 [2025-03-03 15:38:15,178 INFO L435 NwaCegarLoop]: 4155 mSDtfsCounter, 4306 mSDsluCounter, 8232 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 12387 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:15,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4318 Valid, 12387 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:38:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9150 states. [2025-03-03 15:38:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9150 to 8660. [2025-03-03 15:38:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7844 states have (on average 1.5973992860785313) internal successors, (12530), 8059 states have internal predecessors, (12530), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-03 15:38:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14360 transitions. [2025-03-03 15:38:15,498 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14360 transitions. Word has length 91 [2025-03-03 15:38:15,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:15,498 INFO L471 AbstractCegarLoop]: Abstraction has 8660 states and 14360 transitions. [2025-03-03 15:38:15,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2025-03-03 15:38:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14360 transitions. [2025-03-03 15:38:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 15:38:15,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:15,503 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] [2025-03-03 15:38:15,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 15:38:15,503 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:15,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1165254978, now seen corresponding path program 1 times [2025-03-03 15:38:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215493047] [2025-03-03 15:38:15,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:15,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 15:38:15,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 15:38:15,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:15,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:38:15,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:15,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215493047] [2025-03-03 15:38:15,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215493047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:15,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:38:15,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:38:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902993245] [2025-03-03 15:38:15,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:15,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:38:15,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:15,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:38:15,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:38:15,552 INFO L87 Difference]: Start difference. First operand 8660 states and 14360 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-03 15:38:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:16,237 INFO L93 Difference]: Finished difference Result 21377 states and 34893 transitions. [2025-03-03 15:38:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:38:16,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2025-03-03 15:38:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:16,283 INFO L225 Difference]: With dead ends: 21377 [2025-03-03 15:38:16,283 INFO L226 Difference]: Without dead ends: 14851 [2025-03-03 15:38:16,302 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 [2025-03-03 15:38:16,303 INFO L435 NwaCegarLoop]: 4474 mSDtfsCounter, 4434 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4434 SdHoareTripleChecker+Valid, 8879 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:38:16,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4434 Valid, 8879 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:38:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14851 states. [2025-03-03 15:38:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14851 to 14818. [2025-03-03 15:38:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14818 states, 13194 states have (on average 1.538123389419433) internal successors, (20294), 13654 states have internal predecessors, (20294), 802 states have call successors, (802), 397 states have call predecessors, (802), 820 states have return successors, (2817), 798 states have call predecessors, (2817), 800 states have call successors, (2817) [2025-03-03 15:38:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14818 states to 14818 states and 23913 transitions. [2025-03-03 15:38:16,940 INFO L78 Accepts]: Start accepts. Automaton has 14818 states and 23913 transitions. Word has length 91 [2025-03-03 15:38:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:16,941 INFO L471 AbstractCegarLoop]: Abstraction has 14818 states and 23913 transitions. [2025-03-03 15:38:16,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-03 15:38:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14818 states and 23913 transitions. [2025-03-03 15:38:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:38:16,965 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:16,966 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, 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] [2025-03-03 15:38:16,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 15:38:16,966 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:16,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -362071702, now seen corresponding path program 1 times [2025-03-03 15:38:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:16,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253071427] [2025-03-03 15:38:16,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:16,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:16,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:16,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:16,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:38:17,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:17,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253071427] [2025-03-03 15:38:17,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253071427] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:38:17,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974336601] [2025-03-03 15:38:17,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:17,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:38:17,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:38:17,049 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) [2025-03-03 15:38:17,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 15:38:17,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:17,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:17,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:17,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:17,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:38:17,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:38:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 15:38:17,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:38:17,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974336601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:17,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:38:17,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:38:17,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114290371] [2025-03-03 15:38:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:17,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:38:17,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:17,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:38:17,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:17,236 INFO L87 Difference]: Start difference. First operand 14818 states and 23913 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2025-03-03 15:38:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:18,224 INFO L93 Difference]: Finished difference Result 39855 states and 63621 transitions. [2025-03-03 15:38:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:38:18,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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 149 [2025-03-03 15:38:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:18,323 INFO L225 Difference]: With dead ends: 39855 [2025-03-03 15:38:18,323 INFO L226 Difference]: Without dead ends: 27171 [2025-03-03 15:38:18,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:18,358 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4191 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4492 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 [2025-03-03 15:38:18,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4492 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:38:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27171 states. [2025-03-03 15:38:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27171 to 26969. [2025-03-03 15:38:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26969 states, 23795 states have (on average 1.5109897037192688) internal successors, (35954), 24712 states have internal predecessors, (35954), 1532 states have call successors, (1532), 793 states have call predecessors, (1532), 1640 states have return successors, (5533), 1495 states have call predecessors, (5533), 1530 states have call successors, (5533) [2025-03-03 15:38:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26969 states to 26969 states and 43019 transitions. [2025-03-03 15:38:19,479 INFO L78 Accepts]: Start accepts. Automaton has 26969 states and 43019 transitions. Word has length 149 [2025-03-03 15:38:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:19,479 INFO L471 AbstractCegarLoop]: Abstraction has 26969 states and 43019 transitions. [2025-03-03 15:38:19,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2025-03-03 15:38:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 26969 states and 43019 transitions. [2025-03-03 15:38:19,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:38:19,510 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:19,510 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, 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] [2025-03-03 15:38:19,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 15:38:19,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 15:38:19,714 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:19,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash 665905444, now seen corresponding path program 1 times [2025-03-03 15:38:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809001609] [2025-03-03 15:38:19,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:19,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:19,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:19,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:19,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:38:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809001609] [2025-03-03 15:38:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809001609] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:38:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435274246] [2025-03-03 15:38:19,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:19,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:38:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:38:19,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:38:19,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 15:38:19,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:19,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:19,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:19,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:19,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:38:19,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:38:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 15:38:19,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:38:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435274246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:38:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:38:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879556962] [2025-03-03 15:38:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:19,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:38:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:19,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:38:19,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:19,942 INFO L87 Difference]: Start difference. First operand 26969 states and 43019 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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) [2025-03-03 15:38:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:22,158 INFO L93 Difference]: Finished difference Result 75978 states and 120745 transitions. [2025-03-03 15:38:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:38:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 149 [2025-03-03 15:38:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:22,356 INFO L225 Difference]: With dead ends: 75978 [2025-03-03 15:38:22,356 INFO L226 Difference]: Without dead ends: 51143 [2025-03-03 15:38:22,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:22,427 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4185 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4492 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 [2025-03-03 15:38:22,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 4492 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:38:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51143 states. [2025-03-03 15:38:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51143 to 50743. [2025-03-03 15:38:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50743 states, 44535 states have (on average 1.4957673739755248) internal successors, (66614), 46366 states have internal predecessors, (66614), 2926 states have call successors, (2926), 1585 states have call predecessors, (2926), 3280 states have return successors, (10899), 2823 states have call predecessors, (10899), 2924 states have call successors, (10899) [2025-03-03 15:38:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50743 states to 50743 states and 80439 transitions. [2025-03-03 15:38:24,644 INFO L78 Accepts]: Start accepts. Automaton has 50743 states and 80439 transitions. Word has length 149 [2025-03-03 15:38:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:24,644 INFO L471 AbstractCegarLoop]: Abstraction has 50743 states and 80439 transitions. [2025-03-03 15:38:24,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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) [2025-03-03 15:38:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 50743 states and 80439 transitions. [2025-03-03 15:38:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:38:24,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:24,685 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, 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] [2025-03-03 15:38:24,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 15:38:24,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 15:38:24,886 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:24,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:24,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2012965982, now seen corresponding path program 1 times [2025-03-03 15:38:24,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:24,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487114117] [2025-03-03 15:38:24,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:24,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:24,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:24,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:24,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:38:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487114117] [2025-03-03 15:38:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487114117] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:38:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253355592] [2025-03-03 15:38:24,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:24,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:38:24,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:38:24,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:38:24,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 15:38:25,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:25,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:25,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:25,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:25,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:38:25,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:38:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 15:38:25,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:38:25,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253355592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:25,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:38:25,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:38:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258638828] [2025-03-03 15:38:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:25,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:38:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:25,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:38:25,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:25,107 INFO L87 Difference]: Start difference. First operand 50743 states and 80439 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2025-03-03 15:38:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:28,968 INFO L93 Difference]: Finished difference Result 147024 states and 233191 transitions. [2025-03-03 15:38:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:38:28,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 149 [2025-03-03 15:38:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:38:29,332 INFO L225 Difference]: With dead ends: 147024 [2025-03-03 15:38:29,332 INFO L226 Difference]: Without dead ends: 98415 [2025-03-03 15:38:29,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:29,437 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4197 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 4492 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 [2025-03-03 15:38:29,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4197 Valid, 4492 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:38:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98415 states. [2025-03-03 15:38:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98415 to 97619. [2025-03-03 15:38:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97619 states, 85347 states have (on average 1.4865197370733594) internal successors, (126870), 89006 states have internal predecessors, (126870), 5710 states have call successors, (5710), 3169 states have call predecessors, (5710), 6560 states have return successors, (21627), 5475 states have call predecessors, (21627), 5708 states have call successors, (21627) [2025-03-03 15:38:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97619 states to 97619 states and 154207 transitions. [2025-03-03 15:38:34,781 INFO L78 Accepts]: Start accepts. Automaton has 97619 states and 154207 transitions. Word has length 149 [2025-03-03 15:38:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:38:34,781 INFO L471 AbstractCegarLoop]: Abstraction has 97619 states and 154207 transitions. [2025-03-03 15:38:34,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2025-03-03 15:38:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 97619 states and 154207 transitions. [2025-03-03 15:38:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 15:38:34,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:38:34,845 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, 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] [2025-03-03 15:38:34,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 15:38:35,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:38:35,046 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:38:35,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:38:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1085740904, now seen corresponding path program 1 times [2025-03-03 15:38:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:38:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614013932] [2025-03-03 15:38:35,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:35,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:38:35,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:35,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:35,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:35,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:38:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:38:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614013932] [2025-03-03 15:38:35,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614013932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:38:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878012758] [2025-03-03 15:38:35,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:38:35,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:38:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:38:35,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:38:35,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 15:38:35,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 15:38:35,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 15:38:35,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:38:35,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:38:35,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:38:35,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:38:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 15:38:35,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:38:35,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878012758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:38:35,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:38:35,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:38:35,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174023019] [2025-03-03 15:38:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:38:35,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:38:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:38:35,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:38:35,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:38:35,276 INFO L87 Difference]: Start difference. First operand 97619 states and 154207 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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) [2025-03-03 15:38:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:38:41,973 INFO L93 Difference]: Finished difference Result 286716 states and 454223 transitions. [2025-03-03 15:38:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:38:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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 149 [2025-03-03 15:38:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted.