./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.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 211a040b667c92c6d715ed7462c0db91088ae0b583b29f60ca2f33cb3ca9ce8b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:07:25,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:07:25,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:07:25,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:07:25,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:07:25,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:07:25,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:07:25,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:07:25,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:07:25,249 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:07:25,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:07:25,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:07:25,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:07:25,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:07:25,249 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:07:25,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:07:25,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:07:25,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:07:25,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:07:25,251 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:07:25,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:07:25,252 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 -> 211a040b667c92c6d715ed7462c0db91088ae0b583b29f60ca2f33cb3ca9ce8b [2025-03-16 20:07:25,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:07:25,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:07:25,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:07:25,515 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:07:25,515 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:07:25,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c [2025-03-16 20:07:26,708 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3300969/0e81bca195864dac81259e12f1bbc08c/FLAG3006070a9 [2025-03-16 20:07:27,310 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:07:27,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c [2025-03-16 20:07:27,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3300969/0e81bca195864dac81259e12f1bbc08c/FLAG3006070a9 [2025-03-16 20:07:27,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3300969/0e81bca195864dac81259e12f1bbc08c [2025-03-16 20:07:27,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:07:27,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:07:27,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:07:27,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:07:27,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:07:27,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:07:27" (1/1) ... [2025-03-16 20:07:27,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34769f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:27, skipping insertion in model container [2025-03-16 20:07:27,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:07:27" (1/1) ... [2025-03-16 20:07:27,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:07:29,005 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_label49+token_ring.05.cil-1.c[380593,380606] [2025-03-16 20:07:29,031 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_label49+token_ring.05.cil-1.c[383339,383352] [2025-03-16 20:07:29,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:07:29,208 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:07:29,724 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_label49+token_ring.05.cil-1.c[380593,380606] [2025-03-16 20:07:29,728 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_label49+token_ring.05.cil-1.c[383339,383352] [2025-03-16 20:07:29,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:07:29,825 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:07:29,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29 WrapperNode [2025-03-16 20:07:29,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:07:29,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:07:29,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:07:29,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:07:29,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:29,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,132 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12786 [2025-03-16 20:07:30,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:07:30,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:07:30,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:07:30,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:07:30,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,321 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:07:30,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:07:30,620 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:07:30,621 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:07:30,621 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:07:30,622 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (1/1) ... [2025-03-16 20:07:30,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:07:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:07:30,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:07:30,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:07:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:07:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:07:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:07:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:07:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:07:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:07:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:07:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:07:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:07:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:07:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:07:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:07:30,759 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:07:30,761 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:07:36,957 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:07:36,958 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:07:36,958 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:07:36,958 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:07:36,959 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:07:36,959 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:07:36,959 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:07:37,219 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2025-03-16 20:07:37,220 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:07:37,280 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:07:37,283 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:07:37,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:07:37 BoogieIcfgContainer [2025-03-16 20:07:37,284 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:07:37,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:07:37,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:07:37,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:07:37,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:07:27" (1/3) ... [2025-03-16 20:07:37,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b1b935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:07:37, skipping insertion in model container [2025-03-16 20:07:37,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:07:29" (2/3) ... [2025-03-16 20:07:37,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b1b935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:07:37, skipping insertion in model container [2025-03-16 20:07:37,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:07:37" (3/3) ... [2025-03-16 20:07:37,291 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-1.c [2025-03-16 20:07:37,303 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:07:37,306 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label49+token_ring.05.cil-1.c that has 7 procedures, 2316 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-03-16 20:07:37,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:07:37,426 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;@7021b8b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:07:37,427 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:07:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-16 20:07:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:37,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:37,451 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] [2025-03-16 20:07:37,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:37,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2125957295, now seen corresponding path program 1 times [2025-03-16 20:07:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967280167] [2025-03-16 20:07:37,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:37,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:37,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:37,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:37,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967280167] [2025-03-16 20:07:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967280167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:37,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:37,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:37,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152163675] [2025-03-16 20:07:37,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:37,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:37,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:37,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:37,909 INFO L87 Difference]: Start difference. First operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:38,424 INFO L93 Difference]: Finished difference Result 4824 states and 8974 transitions. [2025-03-16 20:07:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:07:38,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:38,452 INFO L225 Difference]: With dead ends: 4824 [2025-03-16 20:07:38,452 INFO L226 Difference]: Without dead ends: 2511 [2025-03-16 20:07:38,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:38,462 INFO L435 NwaCegarLoop]: 4197 mSDtfsCounter, 4499 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 12707 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:38,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4512 Valid, 12707 Invalid, 369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:07:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2025-03-16 20:07:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2496. [2025-03-16 20:07:38,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8284313725490196) internal successors, (4476), 2451 states have internal predecessors, (4476), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:07:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4543 transitions. [2025-03-16 20:07:38,578 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4543 transitions. Word has length 91 [2025-03-16 20:07:38,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:38,578 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4543 transitions. [2025-03-16 20:07:38,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:38,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4543 transitions. [2025-03-16 20:07:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:38,581 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:38,581 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] [2025-03-16 20:07:38,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:07:38,582 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:38,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322797, now seen corresponding path program 1 times [2025-03-16 20:07:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178547151] [2025-03-16 20:07:38,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:38,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:38,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:38,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:38,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:38,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:38,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:38,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178547151] [2025-03-16 20:07:38,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178547151] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:38,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411644683] [2025-03-16 20:07:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:38,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:38,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:38,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:38,765 INFO L87 Difference]: Start difference. First operand 2496 states and 4543 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:39,004 INFO L93 Difference]: Finished difference Result 2896 states and 5179 transitions. [2025-03-16 20:07:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:39,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:39,016 INFO L225 Difference]: With dead ends: 2896 [2025-03-16 20:07:39,016 INFO L226 Difference]: Without dead ends: 2532 [2025-03-16 20:07:39,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:39,019 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4342 mSDsluCounter, 8273 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 12452 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:39,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 12452 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:07:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2025-03-16 20:07:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2496. [2025-03-16 20:07:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8276143790849673) internal successors, (4474), 2451 states have internal predecessors, (4474), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:07:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4541 transitions. [2025-03-16 20:07:39,147 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4541 transitions. Word has length 91 [2025-03-16 20:07:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:39,147 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4541 transitions. [2025-03-16 20:07:39,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4541 transitions. [2025-03-16 20:07:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:39,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:39,150 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] [2025-03-16 20:07:39,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:07:39,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:39,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash -310507598, now seen corresponding path program 1 times [2025-03-16 20:07:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:39,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360022099] [2025-03-16 20:07:39,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:39,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:39,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:39,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:39,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:39,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:39,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360022099] [2025-03-16 20:07:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360022099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:39,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:39,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:39,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386532101] [2025-03-16 20:07:39,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:39,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:39,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:39,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:39,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:39,357 INFO L87 Difference]: Start difference. First operand 2496 states and 4541 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:39,923 INFO L93 Difference]: Finished difference Result 3090 states and 5474 transitions. [2025-03-16 20:07:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:39,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:39,937 INFO L225 Difference]: With dead ends: 3090 [2025-03-16 20:07:39,937 INFO L226 Difference]: Without dead ends: 2726 [2025-03-16 20:07:39,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:39,941 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4481 mSDsluCounter, 13004 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 17342 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:39,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4494 Valid, 17342 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:07:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2025-03-16 20:07:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2667. [2025-03-16 20:07:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2598 states have (on average 1.811008468052348) internal successors, (4705), 2602 states have internal predecessors, (4705), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2025-03-16 20:07:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4803 transitions. [2025-03-16 20:07:40,016 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4803 transitions. Word has length 91 [2025-03-16 20:07:40,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:40,016 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4803 transitions. [2025-03-16 20:07:40,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4803 transitions. [2025-03-16 20:07:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:40,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:40,018 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] [2025-03-16 20:07:40,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:07:40,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:40,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash 556544627, now seen corresponding path program 1 times [2025-03-16 20:07:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:40,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607405985] [2025-03-16 20:07:40,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:40,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:40,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:40,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:40,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:40,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:40,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607405985] [2025-03-16 20:07:40,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607405985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:40,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:40,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147682374] [2025-03-16 20:07:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:40,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:40,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:40,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:40,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:40,161 INFO L87 Difference]: Start difference. First operand 2667 states and 4803 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:40,580 INFO L93 Difference]: Finished difference Result 3628 states and 6309 transitions. [2025-03-16 20:07:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:40,591 INFO L225 Difference]: With dead ends: 3628 [2025-03-16 20:07:40,591 INFO L226 Difference]: Without dead ends: 3093 [2025-03-16 20:07:40,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:40,594 INFO L435 NwaCegarLoop]: 4334 mSDtfsCounter, 4476 mSDsluCounter, 12992 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 17326 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:40,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 17326 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:07:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2025-03-16 20:07:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3028. [2025-03-16 20:07:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2915 states have (on average 1.7831903945111491) internal successors, (5198), 2923 states have internal predecessors, (5198), 75 states have call successors, (75), 30 states have call predecessors, (75), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2025-03-16 20:07:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5364 transitions. [2025-03-16 20:07:40,657 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5364 transitions. Word has length 91 [2025-03-16 20:07:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:40,657 INFO L471 AbstractCegarLoop]: Abstraction has 3028 states and 5364 transitions. [2025-03-16 20:07:40,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5364 transitions. [2025-03-16 20:07:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:40,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:40,658 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] [2025-03-16 20:07:40,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:07:40,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:40,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1000156050, now seen corresponding path program 1 times [2025-03-16 20:07:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982741248] [2025-03-16 20:07:40,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:40,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:40,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:40,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:40,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:40,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982741248] [2025-03-16 20:07:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982741248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:40,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396943197] [2025-03-16 20:07:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:40,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:40,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:40,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:40,797 INFO L87 Difference]: Start difference. First operand 3028 states and 5364 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:41,230 INFO L93 Difference]: Finished difference Result 4775 states and 8124 transitions. [2025-03-16 20:07:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:41,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:41,247 INFO L225 Difference]: With dead ends: 4775 [2025-03-16 20:07:41,247 INFO L226 Difference]: Without dead ends: 3879 [2025-03-16 20:07:41,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:41,251 INFO L435 NwaCegarLoop]: 4331 mSDtfsCounter, 4471 mSDsluCounter, 12983 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:41,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 17314 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:07:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2025-03-16 20:07:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3801. [2025-03-16 20:07:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3594 states have (on average 1.7434613244296049) internal successors, (6266), 3616 states have internal predecessors, (6266), 131 states have call successors, (131), 54 states have call predecessors, (131), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2025-03-16 20:07:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 6592 transitions. [2025-03-16 20:07:41,350 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 6592 transitions. Word has length 91 [2025-03-16 20:07:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:41,351 INFO L471 AbstractCegarLoop]: Abstraction has 3801 states and 6592 transitions. [2025-03-16 20:07:41,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 6592 transitions. [2025-03-16 20:07:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:41,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:41,355 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:07:41,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:07:41,355 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:41,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash 44634771, now seen corresponding path program 1 times [2025-03-16 20:07:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102179678] [2025-03-16 20:07:41,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:41,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:41,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:41,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:41,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102179678] [2025-03-16 20:07:41,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102179678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:41,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767676442] [2025-03-16 20:07:41,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:41,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:41,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:41,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:41,458 INFO L87 Difference]: Start difference. First operand 3801 states and 6592 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:41,945 INFO L93 Difference]: Finished difference Result 7254 states and 12166 transitions. [2025-03-16 20:07:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:41,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:41,965 INFO L225 Difference]: With dead ends: 7254 [2025-03-16 20:07:41,965 INFO L226 Difference]: Without dead ends: 5585 [2025-03-16 20:07:41,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:41,970 INFO L435 NwaCegarLoop]: 4328 mSDtfsCounter, 4466 mSDsluCounter, 12974 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:41,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 17302 Invalid, 621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:07:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2025-03-16 20:07:42,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5482. [2025-03-16 20:07:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 5069 states have (on average 1.699348984020517) internal successors, (8614), 5137 states have internal predecessors, (8614), 243 states have call successors, (243), 102 states have call predecessors, (243), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2025-03-16 20:07:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 9356 transitions. [2025-03-16 20:07:42,122 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 9356 transitions. Word has length 91 [2025-03-16 20:07:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:42,122 INFO L471 AbstractCegarLoop]: Abstraction has 5482 states and 9356 transitions. [2025-03-16 20:07:42,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 9356 transitions. [2025-03-16 20:07:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:42,125 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:42,125 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] [2025-03-16 20:07:42,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:07:42,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:42,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2064398478, now seen corresponding path program 1 times [2025-03-16 20:07:42,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:42,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957304356] [2025-03-16 20:07:42,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:42,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:42,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:42,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:42,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957304356] [2025-03-16 20:07:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957304356] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579843585] [2025-03-16 20:07:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:42,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:42,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:42,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:42,228 INFO L87 Difference]: Start difference. First operand 5482 states and 9356 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:43,043 INFO L93 Difference]: Finished difference Result 13237 states and 22329 transitions. [2025-03-16 20:07:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:43,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:43,138 INFO L225 Difference]: With dead ends: 13237 [2025-03-16 20:07:43,139 INFO L226 Difference]: Without dead ends: 9887 [2025-03-16 20:07:43,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:43,160 INFO L435 NwaCegarLoop]: 4323 mSDtfsCounter, 4607 mSDsluCounter, 12954 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4626 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:43,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4626 Valid, 17277 Invalid, 627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:07:43,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2025-03-16 20:07:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9147. [2025-03-16 20:07:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9147 states, 8284 states have (on average 1.6670690487687108) internal successors, (13810), 8498 states have internal predecessors, (13810), 451 states have call successors, (451), 198 states have call predecessors, (451), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2025-03-16 20:07:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 15736 transitions. [2025-03-16 20:07:43,511 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 15736 transitions. Word has length 91 [2025-03-16 20:07:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:43,512 INFO L471 AbstractCegarLoop]: Abstraction has 9147 states and 15736 transitions. [2025-03-16 20:07:43,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 15736 transitions. [2025-03-16 20:07:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:43,519 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:43,519 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] [2025-03-16 20:07:43,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:07:43,519 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:43,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1746893491, now seen corresponding path program 1 times [2025-03-16 20:07:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546679065] [2025-03-16 20:07:43,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:43,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:43,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:43,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:43,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:43,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546679065] [2025-03-16 20:07:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546679065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:43,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:43,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596956891] [2025-03-16 20:07:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:43,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:43,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:43,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:43,619 INFO L87 Difference]: Start difference. First operand 9147 states and 15736 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:44,470 INFO L93 Difference]: Finished difference Result 25082 states and 44155 transitions. [2025-03-16 20:07:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:44,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:44,566 INFO L225 Difference]: With dead ends: 25082 [2025-03-16 20:07:44,566 INFO L226 Difference]: Without dead ends: 18067 [2025-03-16 20:07:44,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:44,597 INFO L435 NwaCegarLoop]: 4316 mSDtfsCounter, 4545 mSDsluCounter, 12935 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 17251 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:44,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 17251 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:07:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18067 states. [2025-03-16 20:07:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18067 to 17077. [2025-03-16 20:07:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6458333333333333) internal successors, (24964), 15836 states have internal predecessors, (24964), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:07:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30762 transitions. [2025-03-16 20:07:45,549 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30762 transitions. Word has length 91 [2025-03-16 20:07:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:45,550 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30762 transitions. [2025-03-16 20:07:45,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30762 transitions. [2025-03-16 20:07:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:45,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:45,561 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] [2025-03-16 20:07:45,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:07:45,562 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:45,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1500580404, now seen corresponding path program 1 times [2025-03-16 20:07:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:45,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129342156] [2025-03-16 20:07:45,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:45,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:45,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:45,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:45,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:45,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:45,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129342156] [2025-03-16 20:07:45,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129342156] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:45,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:45,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:45,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436756392] [2025-03-16 20:07:45,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:45,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:45,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:45,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:45,634 INFO L87 Difference]: Start difference. First operand 17077 states and 30762 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:46,403 INFO L93 Difference]: Finished difference Result 34946 states and 65430 transitions. [2025-03-16 20:07:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:46,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:46,529 INFO L225 Difference]: With dead ends: 34946 [2025-03-16 20:07:46,529 INFO L226 Difference]: Without dead ends: 20001 [2025-03-16 20:07:46,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:46,620 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4330 mSDsluCounter, 8238 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 12400 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:46,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 12400 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:07:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20001 states. [2025-03-16 20:07:47,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20001 to 17077. [2025-03-16 20:07:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6415479957805907) internal successors, (24899), 15836 states have internal predecessors, (24899), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:07:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30697 transitions. [2025-03-16 20:07:47,673 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30697 transitions. Word has length 91 [2025-03-16 20:07:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:47,673 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30697 transitions. [2025-03-16 20:07:47,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30697 transitions. [2025-03-16 20:07:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:47,683 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:47,684 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] [2025-03-16 20:07:47,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:07:47,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:47,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash -169933165, now seen corresponding path program 1 times [2025-03-16 20:07:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954888518] [2025-03-16 20:07:47,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:47,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:47,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:47,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:47,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:47,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954888518] [2025-03-16 20:07:47,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954888518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:47,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:47,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:47,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888661965] [2025-03-16 20:07:47,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:47,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:47,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:47,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:47,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:47,777 INFO L87 Difference]: Start difference. First operand 17077 states and 30697 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:48,836 INFO L93 Difference]: Finished difference Result 34215 states and 63838 transitions. [2025-03-16 20:07:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:48,922 INFO L225 Difference]: With dead ends: 34215 [2025-03-16 20:07:48,922 INFO L226 Difference]: Without dead ends: 19270 [2025-03-16 20:07:48,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:48,954 INFO L435 NwaCegarLoop]: 4159 mSDtfsCounter, 4327 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 12392 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:48,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 12392 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:07:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19270 states. [2025-03-16 20:07:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19270 to 17077. [2025-03-16 20:07:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.637262658227848) internal successors, (24834), 15836 states have internal predecessors, (24834), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:07:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30632 transitions. [2025-03-16 20:07:49,749 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30632 transitions. Word has length 91 [2025-03-16 20:07:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:49,749 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30632 transitions. [2025-03-16 20:07:49,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30632 transitions. [2025-03-16 20:07:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:49,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:49,758 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] [2025-03-16 20:07:49,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:07:49,758 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:49,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash -778010028, now seen corresponding path program 1 times [2025-03-16 20:07:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:49,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052580507] [2025-03-16 20:07:49,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:49,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:49,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:49,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:49,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:49,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052580507] [2025-03-16 20:07:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052580507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:49,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097260936] [2025-03-16 20:07:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:49,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:49,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:49,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:49,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:49,834 INFO L87 Difference]: Start difference. First operand 17077 states and 30632 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:51,516 INFO L93 Difference]: Finished difference Result 48626 states and 93277 transitions. [2025-03-16 20:07:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:51,680 INFO L225 Difference]: With dead ends: 48626 [2025-03-16 20:07:51,680 INFO L226 Difference]: Without dead ends: 33681 [2025-03-16 20:07:51,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:51,728 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4443 mSDsluCounter, 12898 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 17201 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:51,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 17201 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:07:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33681 states. [2025-03-16 20:07:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33681 to 33084. [2025-03-16 20:07:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33084 states, 28629 states have (on average 1.6048761745083657) internal successors, (45946), 30691 states have internal predecessors, (45946), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2025-03-16 20:07:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33084 states to 33084 states and 65568 transitions. [2025-03-16 20:07:54,007 INFO L78 Accepts]: Start accepts. Automaton has 33084 states and 65568 transitions. Word has length 91 [2025-03-16 20:07:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:54,007 INFO L471 AbstractCegarLoop]: Abstraction has 33084 states and 65568 transitions. [2025-03-16 20:07:54,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 33084 states and 65568 transitions. [2025-03-16 20:07:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:07:54,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:54,023 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] [2025-03-16 20:07:54,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:07:54,023 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:54,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1003489907, now seen corresponding path program 1 times [2025-03-16 20:07:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591755750] [2025-03-16 20:07:54,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:54,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:07:54,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:07:54,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:54,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:54,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591755750] [2025-03-16 20:07:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591755750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:54,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:54,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:07:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109919079] [2025-03-16 20:07:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:54,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:07:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:54,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:07:54,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:07:54,072 INFO L87 Difference]: Start difference. First operand 33084 states and 65568 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:07:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:56,916 INFO L93 Difference]: Finished difference Result 94467 states and 189396 transitions. [2025-03-16 20:07:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:07:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:57,237 INFO L225 Difference]: With dead ends: 94467 [2025-03-16 20:07:57,237 INFO L226 Difference]: Without dead ends: 63516 [2025-03-16 20:07:57,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:07:57,349 INFO L435 NwaCegarLoop]: 4503 mSDtfsCounter, 4464 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 8935 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:57,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 8935 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:07:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63516 states. [2025-03-16 20:08:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63516 to 63387. [2025-03-16 20:08:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63387 states, 54483 states have (on average 1.5828974175430868) internal successors, (86241), 58734 states have internal predecessors, (86241), 3234 states have call successors, (3234), 1548 states have call predecessors, (3234), 5668 states have return successors, (35875), 3232 states have call predecessors, (35875), 3234 states have call successors, (35875) [2025-03-16 20:08:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63387 states to 63387 states and 125350 transitions. [2025-03-16 20:08:01,734 INFO L78 Accepts]: Start accepts. Automaton has 63387 states and 125350 transitions. Word has length 91 [2025-03-16 20:08:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:08:01,734 INFO L471 AbstractCegarLoop]: Abstraction has 63387 states and 125350 transitions. [2025-03-16 20:08:01,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:08:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 63387 states and 125350 transitions. [2025-03-16 20:08:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 20:08:01,816 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:08:01,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:08:01,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:08:01,817 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:08:01,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:08:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -282382986, now seen corresponding path program 1 times [2025-03-16 20:08:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:08:01,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494354668] [2025-03-16 20:08:01,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:08:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:08:01,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:08:01,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:08:01,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:08:01,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:08:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 20:08:01,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:08:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494354668] [2025-03-16 20:08:01,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494354668] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:08:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067905727] [2025-03-16 20:08:01,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:08:01,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:08:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:08:01,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:08:01,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 20:08:01,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:08:01,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:08:01,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:08:01,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:08:02,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:08:02,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:08:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 20:08:02,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:08:02,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067905727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:08:02,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:08:02,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:08:02,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267089173] [2025-03-16 20:08:02,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:08:02,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:08:02,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:08:02,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:08:02,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:08:02,069 INFO L87 Difference]: Start difference. First operand 63387 states and 125350 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:08:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:08:07,217 INFO L93 Difference]: Finished difference Result 184604 states and 367582 transitions. [2025-03-16 20:08:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:08:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2025-03-16 20:08:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:08:07,920 INFO L225 Difference]: With dead ends: 184604 [2025-03-16 20:08:07,920 INFO L226 Difference]: Without dead ends: 123350 [2025-03-16 20:08:08,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:08:08,044 INFO L435 NwaCegarLoop]: 4246 mSDtfsCounter, 4200 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:08:08,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 4508 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:08:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123350 states.