./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/pc_sfifo_1.cil-2+token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fee2fbeec3a60e447cd74345d2f8a46dc28fcea89eab2880c2a2ccd5802bfaa0 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 17:13:54,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:13:54,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:13:54,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:13:54,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:13:54,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:13:54,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:13:54,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:13:54,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:13:54,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:13:54,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:13:54,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:13:54,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:13:54,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:13:54,500 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:13:54,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:13:54,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:13:54,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:13:54,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:13:54,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:13:54,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:13:54,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:13:54,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:13:54,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:13:54,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:13:54,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:13:54,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:13:54,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:13:54,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:13:54,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:13:54,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:13:54,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:13:54,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:13:54,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:13:54,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:13:54,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:13:54,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:13:54,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:13:54,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:13:54,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:13:54,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:13:54,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:13:54,512 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fee2fbeec3a60e447cd74345d2f8a46dc28fcea89eab2880c2a2ccd5802bfaa0 [2024-11-08 17:13:54,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:13:54,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:13:54,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:13:54,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:13:54,774 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:13:54,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2024-11-08 17:13:56,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:13:56,388 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:13:56,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2024-11-08 17:13:56,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6681d2777/8ef536153523401fb8ec013b1b0247da/FLAG67ac43ecd [2024-11-08 17:13:56,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6681d2777/8ef536153523401fb8ec013b1b0247da [2024-11-08 17:13:56,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:13:56,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:13:56,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:13:56,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:13:56,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:13:56,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:13:56" (1/1) ... [2024-11-08 17:13:56,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6caeeeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:56, skipping insertion in model container [2024-11-08 17:13:56,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:13:56" (1/1) ... [2024-11-08 17:13:56,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:13:56,936 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/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2024-11-08 17:13:56,988 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/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2024-11-08 17:13:57,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:13:57,054 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:13:57,063 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/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2024-11-08 17:13:57,077 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/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2024-11-08 17:13:57,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:13:57,128 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:13:57,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57 WrapperNode [2024-11-08 17:13:57,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:13:57,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:13:57,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:13:57,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:13:57,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,198 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 723 [2024-11-08 17:13:57,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:13:57,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:13:57,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:13:57,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:13:57,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,255 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]. [2024-11-08 17:13:57,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:13:57,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:13:57,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:13:57,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:13:57,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:13:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:57,355 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) [2024-11-08 17:13:57,360 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 [2024-11-08 17:13:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:13:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-08 17:13:57,407 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-08 17:13:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-08 17:13:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-08 17:13:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-08 17:13:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-08 17:13:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-08 17:13:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-08 17:13:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-08 17:13:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-08 17:13:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-08 17:13:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-08 17:13:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-08 17:13:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-08 17:13:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:13:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-08 17:13:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-08 17:13:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:13:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:13:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-08 17:13:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-08 17:13:57,519 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:13:57,522 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:13:58,071 INFO L? ?]: Removed 91 outVars from TransFormulas that were not future-live. [2024-11-08 17:13:58,071 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:13:58,097 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:13:58,102 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-08 17:13:58,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:13:58 BoogieIcfgContainer [2024-11-08 17:13:58,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:13:58,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:13:58,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:13:58,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:13:58,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:13:56" (1/3) ... [2024-11-08 17:13:58,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df2885d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:13:58, skipping insertion in model container [2024-11-08 17:13:58,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (2/3) ... [2024-11-08 17:13:58,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df2885d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:13:58, skipping insertion in model container [2024-11-08 17:13:58,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:13:58" (3/3) ... [2024-11-08 17:13:58,111 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2024-11-08 17:13:58,124 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:13:58,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 17:13:58,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:13:58,197 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;@15014e16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:13:58,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 17:13:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 273 states have (on average 1.6007326007326008) internal successors, (437), 278 states have internal predecessors, (437), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-08 17:13:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 17:13:58,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:58,212 INFO L215 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] [2024-11-08 17:13:58,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:58,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1020117344, now seen corresponding path program 1 times [2024-11-08 17:13:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:58,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536836342] [2024-11-08 17:13:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:58,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:13:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:58,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536836342] [2024-11-08 17:13:58,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536836342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287001998] [2024-11-08 17:13:58,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:58,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:58,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:58,567 INFO L87 Difference]: Start difference. First operand has 311 states, 273 states have (on average 1.6007326007326008) internal successors, (437), 278 states have internal predecessors, (437), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:13:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:58,991 INFO L93 Difference]: Finished difference Result 673 states and 1058 transitions. [2024-11-08 17:13:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-08 17:13:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:59,007 INFO L225 Difference]: With dead ends: 673 [2024-11-08 17:13:59,007 INFO L226 Difference]: Without dead ends: 371 [2024-11-08 17:13:59,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:13:59,013 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 590 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:59,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 623 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:13:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-08 17:13:59,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 365. [2024-11-08 17:13:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 322 states have (on average 1.4782608695652173) internal successors, (476), 326 states have internal predecessors, (476), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-08 17:13:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 540 transitions. [2024-11-08 17:13:59,073 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 540 transitions. Word has length 44 [2024-11-08 17:13:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:59,074 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 540 transitions. [2024-11-08 17:13:59,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:13:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 540 transitions. [2024-11-08 17:13:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:13:59,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:59,077 INFO L215 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] [2024-11-08 17:13:59,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:13:59,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:59,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash -300926777, now seen corresponding path program 1 times [2024-11-08 17:13:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173542595] [2024-11-08 17:13:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:13:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173542595] [2024-11-08 17:13:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173542595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:59,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413157106] [2024-11-08 17:13:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:59,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:59,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:59,208 INFO L87 Difference]: Start difference. First operand 365 states and 540 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:13:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:59,581 INFO L93 Difference]: Finished difference Result 613 states and 880 transitions. [2024-11-08 17:13:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-08 17:13:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:59,587 INFO L225 Difference]: With dead ends: 613 [2024-11-08 17:13:59,587 INFO L226 Difference]: Without dead ends: 489 [2024-11-08 17:13:59,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:13:59,593 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 249 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:59,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 835 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:13:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-08 17:13:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 432. [2024-11-08 17:13:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 383 states have (on average 1.4621409921671018) internal successors, (560), 387 states have internal predecessors, (560), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (37), 31 states have call predecessors, (37), 31 states have call successors, (37) [2024-11-08 17:13:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 630 transitions. [2024-11-08 17:13:59,635 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 630 transitions. Word has length 45 [2024-11-08 17:13:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:59,639 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 630 transitions. [2024-11-08 17:13:59,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:13:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 630 transitions. [2024-11-08 17:13:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:13:59,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:59,641 INFO L215 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] [2024-11-08 17:13:59,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:13:59,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:59,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1585284238, now seen corresponding path program 1 times [2024-11-08 17:13:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:59,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922218466] [2024-11-08 17:13:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:13:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922218466] [2024-11-08 17:13:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922218466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:59,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942677416] [2024-11-08 17:13:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:59,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:59,743 INFO L87 Difference]: Start difference. First operand 432 states and 630 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:14:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:00,319 INFO L93 Difference]: Finished difference Result 840 states and 1189 transitions. [2024-11-08 17:14:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:14:00,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-08 17:14:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:00,324 INFO L225 Difference]: With dead ends: 840 [2024-11-08 17:14:00,326 INFO L226 Difference]: Without dead ends: 649 [2024-11-08 17:14:00,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:14:00,328 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 600 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:00,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 617 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:14:00,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-08 17:14:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 597. [2024-11-08 17:14:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 529 states have (on average 1.4177693761814745) internal successors, (750), 536 states have internal predecessors, (750), 44 states have call successors, (44), 21 states have call predecessors, (44), 22 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2024-11-08 17:14:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 848 transitions. [2024-11-08 17:14:00,369 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 848 transitions. Word has length 45 [2024-11-08 17:14:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:00,370 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 848 transitions. [2024-11-08 17:14:00,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:14:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 848 transitions. [2024-11-08 17:14:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:14:00,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:00,375 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 17:14:00,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:14:00,375 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:00,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2108015824, now seen corresponding path program 1 times [2024-11-08 17:14:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:00,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300262536] [2024-11-08 17:14:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:14:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:14:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 17:14:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:14:00,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:00,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300262536] [2024-11-08 17:14:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300262536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:00,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:00,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:14:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559543480] [2024-11-08 17:14:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:00,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:14:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:14:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:14:00,470 INFO L87 Difference]: Start difference. First operand 597 states and 848 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:14:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:00,785 INFO L93 Difference]: Finished difference Result 1181 states and 1633 transitions. [2024-11-08 17:14:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:14:00,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-08 17:14:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:00,790 INFO L225 Difference]: With dead ends: 1181 [2024-11-08 17:14:00,791 INFO L226 Difference]: Without dead ends: 825 [2024-11-08 17:14:00,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:14:00,794 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 233 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:00,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 885 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:14:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-11-08 17:14:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 787. [2024-11-08 17:14:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 695 states have (on average 1.3669064748201438) internal successors, (950), 704 states have internal predecessors, (950), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (78), 54 states have call predecessors, (78), 56 states have call successors, (78) [2024-11-08 17:14:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1086 transitions. [2024-11-08 17:14:00,835 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1086 transitions. Word has length 62 [2024-11-08 17:14:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:00,836 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 1086 transitions. [2024-11-08 17:14:00,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:14:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1086 transitions. [2024-11-08 17:14:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:14:00,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:00,840 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 17:14:00,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:14:00,841 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:00,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1042963189, now seen corresponding path program 1 times [2024-11-08 17:14:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154391176] [2024-11-08 17:14:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:00,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:14:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 17:14:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 17:14:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 17:14:00,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154391176] [2024-11-08 17:14:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154391176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:14:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615570652] [2024-11-08 17:14:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:00,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:14:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:14:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:14:00,911 INFO L87 Difference]: Start difference. First operand 787 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 17:14:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:01,180 INFO L93 Difference]: Finished difference Result 1440 states and 1939 transitions. [2024-11-08 17:14:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:14:01,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-08 17:14:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:01,188 INFO L225 Difference]: With dead ends: 1440 [2024-11-08 17:14:01,189 INFO L226 Difference]: Without dead ends: 986 [2024-11-08 17:14:01,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:14:01,192 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 587 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:01,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 616 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:14:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-08 17:14:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 931. [2024-11-08 17:14:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 823 states have (on average 1.3377885783718104) internal successors, (1101), 834 states have internal predecessors, (1101), 66 states have call successors, (66), 35 states have call predecessors, (66), 40 states have return successors, (92), 62 states have call predecessors, (92), 64 states have call successors, (92) [2024-11-08 17:14:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1259 transitions. [2024-11-08 17:14:01,263 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1259 transitions. Word has length 67 [2024-11-08 17:14:01,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:01,264 INFO L471 AbstractCegarLoop]: Abstraction has 931 states and 1259 transitions. [2024-11-08 17:14:01,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 17:14:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1259 transitions. [2024-11-08 17:14:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:14:01,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:01,267 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 17:14:01,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:14:01,268 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:01,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2053976574, now seen corresponding path program 1 times [2024-11-08 17:14:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:01,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527539712] [2024-11-08 17:14:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:14:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:14:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 17:14:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:14:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527539712] [2024-11-08 17:14:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527539712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906847911] [2024-11-08 17:14:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:01,398 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) [2024-11-08 17:14:01,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:14:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:14:01,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:01,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:14:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906847911] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:01,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-08 17:14:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708221422] [2024-11-08 17:14:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:01,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:14:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:14:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:01,649 INFO L87 Difference]: Start difference. First operand 931 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:14:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:01,861 INFO L93 Difference]: Finished difference Result 987 states and 1327 transitions. [2024-11-08 17:14:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:14:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-08 17:14:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:01,871 INFO L225 Difference]: With dead ends: 987 [2024-11-08 17:14:01,875 INFO L226 Difference]: Without dead ends: 984 [2024-11-08 17:14:01,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:14:01,877 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 805 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:01,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 540 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:14:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-08 17:14:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 930. [2024-11-08 17:14:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 823 states have (on average 1.3353584447144593) internal successors, (1099), 833 states have internal predecessors, (1099), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (92), 62 states have call predecessors, (92), 64 states have call successors, (92) [2024-11-08 17:14:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1256 transitions. [2024-11-08 17:14:01,984 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1256 transitions. Word has length 68 [2024-11-08 17:14:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:01,989 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1256 transitions. [2024-11-08 17:14:01,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:14:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1256 transitions. [2024-11-08 17:14:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 17:14:01,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:01,991 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 17:14:02,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:14:02,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:14:02,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:02,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 750276014, now seen corresponding path program 1 times [2024-11-08 17:14:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429272779] [2024-11-08 17:14:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:02,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:02,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:14:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:02,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:14:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:02,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 17:14:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:14:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429272779] [2024-11-08 17:14:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429272779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210723058] [2024-11-08 17:14:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:02,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:02,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:02,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:02,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:14:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:02,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:14:02,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:02,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:14:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210723058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:02,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:02,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-08 17:14:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804999280] [2024-11-08 17:14:02,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:02,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:14:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:14:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:14:02,771 INFO L87 Difference]: Start difference. First operand 930 states and 1256 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-08 17:14:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:03,932 INFO L93 Difference]: Finished difference Result 2437 states and 3244 transitions. [2024-11-08 17:14:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:14:03,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-08 17:14:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:03,945 INFO L225 Difference]: With dead ends: 2437 [2024-11-08 17:14:03,950 INFO L226 Difference]: Without dead ends: 1893 [2024-11-08 17:14:03,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:14:03,954 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 769 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:03,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 2868 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:14:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-08 17:14:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1293. [2024-11-08 17:14:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1147 states have (on average 1.3068875326939844) internal successors, (1499), 1165 states have internal predecessors, (1499), 85 states have call successors, (85), 49 states have call predecessors, (85), 59 states have return successors, (126), 79 states have call predecessors, (126), 84 states have call successors, (126) [2024-11-08 17:14:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1710 transitions. [2024-11-08 17:14:04,058 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1710 transitions. Word has length 69 [2024-11-08 17:14:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:04,059 INFO L471 AbstractCegarLoop]: Abstraction has 1293 states and 1710 transitions. [2024-11-08 17:14:04,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-08 17:14:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1710 transitions. [2024-11-08 17:14:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 17:14:04,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:04,065 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 17:14:04,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:04,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 17:14:04,269 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:04,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1614104128, now seen corresponding path program 1 times [2024-11-08 17:14:04,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:04,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140002908] [2024-11-08 17:14:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:04,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:14:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:14:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 17:14:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:14:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:14:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140002908] [2024-11-08 17:14:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140002908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280665339] [2024-11-08 17:14:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:04,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:04,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:04,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:04,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:14:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:14:04,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:14:04,548 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:14:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280665339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:04,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:14:04,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 17:14:04,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196050800] [2024-11-08 17:14:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:04,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:04,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:04,551 INFO L87 Difference]: Start difference. First operand 1293 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:14:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:04,594 INFO L93 Difference]: Finished difference Result 1990 states and 2614 transitions. [2024-11-08 17:14:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:14:04,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-08 17:14:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:04,599 INFO L225 Difference]: With dead ends: 1990 [2024-11-08 17:14:04,600 INFO L226 Difference]: Without dead ends: 1171 [2024-11-08 17:14:04,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:04,602 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 409 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:04,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 554 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:14:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-08 17:14:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1156. [2024-11-08 17:14:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1026 states have (on average 1.3070175438596492) internal successors, (1341), 1043 states have internal predecessors, (1341), 77 states have call successors, (77), 43 states have call predecessors, (77), 51 states have return successors, (112), 70 states have call predecessors, (112), 76 states have call successors, (112) [2024-11-08 17:14:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1530 transitions. [2024-11-08 17:14:04,662 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1530 transitions. Word has length 88 [2024-11-08 17:14:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:04,663 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1530 transitions. [2024-11-08 17:14:04,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:14:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1530 transitions. [2024-11-08 17:14:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:14:04,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:04,665 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 17:14:04,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:14:04,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:04,867 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:04,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash -999731169, now seen corresponding path program 1 times [2024-11-08 17:14:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850638070] [2024-11-08 17:14:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:04,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:14:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:14:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 17:14:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 17:14:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-08 17:14:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:14:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850638070] [2024-11-08 17:14:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850638070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220436459] [2024-11-08 17:14:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:04,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:04,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:04,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:04,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:14:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:14:05,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:14:05,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:14:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220436459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:05,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:14:05,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 17:14:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913365865] [2024-11-08 17:14:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:05,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:05,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:05,082 INFO L87 Difference]: Start difference. First operand 1156 states and 1530 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-08 17:14:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:05,122 INFO L93 Difference]: Finished difference Result 1535 states and 1998 transitions. [2024-11-08 17:14:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:14:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-08 17:14:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:05,125 INFO L225 Difference]: With dead ends: 1535 [2024-11-08 17:14:05,125 INFO L226 Difference]: Without dead ends: 235 [2024-11-08 17:14:05,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:05,129 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 62 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:05,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 918 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:14:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-08 17:14:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-08 17:14:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 208 states have (on average 1.5240384615384615) internal successors, (317), 209 states have internal predecessors, (317), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-08 17:14:05,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 357 transitions. [2024-11-08 17:14:05,138 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 357 transitions. Word has length 103 [2024-11-08 17:14:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:05,138 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 357 transitions. [2024-11-08 17:14:05,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-08 17:14:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 357 transitions. [2024-11-08 17:14:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:05,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:05,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:05,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:14:05,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:05,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:05,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -917328685, now seen corresponding path program 1 times [2024-11-08 17:14:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:05,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853049901] [2024-11-08 17:14:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:05,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:05,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:05,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853049901] [2024-11-08 17:14:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853049901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:05,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:14:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806264811] [2024-11-08 17:14:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:05,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:14:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:14:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:14:05,446 INFO L87 Difference]: Start difference. First operand 235 states and 357 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:06,130 INFO L93 Difference]: Finished difference Result 536 states and 830 transitions. [2024-11-08 17:14:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:14:06,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-08 17:14:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:06,132 INFO L225 Difference]: With dead ends: 536 [2024-11-08 17:14:06,133 INFO L226 Difference]: Without dead ends: 311 [2024-11-08 17:14:06,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:06,134 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 592 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:06,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 469 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:14:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-08 17:14:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 235. [2024-11-08 17:14:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 208 states have (on average 1.5192307692307692) internal successors, (316), 209 states have internal predecessors, (316), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-08 17:14:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 356 transitions. [2024-11-08 17:14:06,146 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 356 transitions. Word has length 112 [2024-11-08 17:14:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:06,147 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 356 transitions. [2024-11-08 17:14:06,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 356 transitions. [2024-11-08 17:14:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:06,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:06,148 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:06,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:14:06,148 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:06,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 389813713, now seen corresponding path program 1 times [2024-11-08 17:14:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826433093] [2024-11-08 17:14:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826433093] [2024-11-08 17:14:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826433093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:14:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255045042] [2024-11-08 17:14:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:06,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:14:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:14:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:14:06,265 INFO L87 Difference]: Start difference. First operand 235 states and 356 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:07,485 INFO L93 Difference]: Finished difference Result 833 states and 1297 transitions. [2024-11-08 17:14:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:14:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:07,489 INFO L225 Difference]: With dead ends: 833 [2024-11-08 17:14:07,492 INFO L226 Difference]: Without dead ends: 613 [2024-11-08 17:14:07,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:14:07,494 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 878 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:07,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 798 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:14:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-08 17:14:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 462. [2024-11-08 17:14:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 413 states have (on average 1.5326876513317191) internal successors, (633), 415 states have internal predecessors, (633), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2024-11-08 17:14:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 706 transitions. [2024-11-08 17:14:07,589 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 706 transitions. Word has length 112 [2024-11-08 17:14:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:07,589 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 706 transitions. [2024-11-08 17:14:07,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 706 transitions. [2024-11-08 17:14:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:07,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:07,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:07,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:14:07,591 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:07,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1741198931, now seen corresponding path program 1 times [2024-11-08 17:14:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:07,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944750660] [2024-11-08 17:14:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:07,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:07,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:07,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:07,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:07,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:07,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:07,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944750660] [2024-11-08 17:14:07,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944750660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:07,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:07,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:07,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135640739] [2024-11-08 17:14:07,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:07,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:07,879 INFO L87 Difference]: Start difference. First operand 462 states and 706 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:09,921 INFO L93 Difference]: Finished difference Result 1370 states and 2131 transitions. [2024-11-08 17:14:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:14:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:09,932 INFO L225 Difference]: With dead ends: 1370 [2024-11-08 17:14:09,932 INFO L226 Difference]: Without dead ends: 923 [2024-11-08 17:14:09,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:14:09,935 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 897 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:09,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1521 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 17:14:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-08 17:14:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 674. [2024-11-08 17:14:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 603 states have (on average 1.5257048092868988) internal successors, (920), 606 states have internal predecessors, (920), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2024-11-08 17:14:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1025 transitions. [2024-11-08 17:14:09,972 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1025 transitions. Word has length 112 [2024-11-08 17:14:09,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:09,973 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1025 transitions. [2024-11-08 17:14:09,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1025 transitions. [2024-11-08 17:14:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:09,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:09,974 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:09,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:14:09,974 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:09,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash 122224017, now seen corresponding path program 1 times [2024-11-08 17:14:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483636667] [2024-11-08 17:14:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:09,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483636667] [2024-11-08 17:14:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483636667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087378376] [2024-11-08 17:14:10,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:10,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:10,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:10,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:10,201 INFO L87 Difference]: Start difference. First operand 674 states and 1025 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:11,998 INFO L93 Difference]: Finished difference Result 2160 states and 3352 transitions. [2024-11-08 17:14:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:14:11,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:12,005 INFO L225 Difference]: With dead ends: 2160 [2024-11-08 17:14:12,005 INFO L226 Difference]: Without dead ends: 1501 [2024-11-08 17:14:12,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:14:12,007 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 891 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:12,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1519 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:14:12,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2024-11-08 17:14:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1102. [2024-11-08 17:14:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 987 states have (on average 1.5207700101317123) internal successors, (1501), 992 states have internal predecessors, (1501), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2024-11-08 17:14:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1674 transitions. [2024-11-08 17:14:12,068 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1674 transitions. Word has length 112 [2024-11-08 17:14:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:12,069 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1674 transitions. [2024-11-08 17:14:12,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1674 transitions. [2024-11-08 17:14:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:12,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:12,070 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:12,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:14:12,070 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:12,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 93723727, now seen corresponding path program 1 times [2024-11-08 17:14:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:12,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30644822] [2024-11-08 17:14:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:12,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:12,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:12,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:12,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:12,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:12,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:12,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30644822] [2024-11-08 17:14:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30644822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:12,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:12,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079216727] [2024-11-08 17:14:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:12,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:12,231 INFO L87 Difference]: Start difference. First operand 1102 states and 1674 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:13,928 INFO L93 Difference]: Finished difference Result 3690 states and 5705 transitions. [2024-11-08 17:14:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:14:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:13,940 INFO L225 Difference]: With dead ends: 3690 [2024-11-08 17:14:13,940 INFO L226 Difference]: Without dead ends: 2603 [2024-11-08 17:14:13,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:14:13,943 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 890 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:13,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1519 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:14:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2024-11-08 17:14:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1959. [2024-11-08 17:14:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1756 states have (on average 1.5165148063781322) internal successors, (2663), 1765 states have internal predecessors, (2663), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2024-11-08 17:14:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2978 transitions. [2024-11-08 17:14:14,049 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2978 transitions. Word has length 112 [2024-11-08 17:14:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:14,049 INFO L471 AbstractCegarLoop]: Abstraction has 1959 states and 2978 transitions. [2024-11-08 17:14:14,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2978 transitions. [2024-11-08 17:14:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:14,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:14,051 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:14,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:14:14,051 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:14,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1846858287, now seen corresponding path program 1 times [2024-11-08 17:14:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165135705] [2024-11-08 17:14:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:14,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:14,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:14,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:14,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:14,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165135705] [2024-11-08 17:14:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165135705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:14,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:14,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614789377] [2024-11-08 17:14:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:14,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:14,220 INFO L87 Difference]: Start difference. First operand 1959 states and 2978 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:15,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:15,845 INFO L93 Difference]: Finished difference Result 6749 states and 10427 transitions. [2024-11-08 17:14:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:14:15,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:15,863 INFO L225 Difference]: With dead ends: 6749 [2024-11-08 17:14:15,863 INFO L226 Difference]: Without dead ends: 4805 [2024-11-08 17:14:15,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:14:15,870 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 889 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:15,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1519 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:14:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2024-11-08 17:14:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 3680. [2024-11-08 17:14:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3301 states have (on average 1.5137837019085125) internal successors, (4997), 3318 states have internal predecessors, (4997), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2024-11-08 17:14:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 5614 transitions. [2024-11-08 17:14:16,123 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 5614 transitions. Word has length 112 [2024-11-08 17:14:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:16,123 INFO L471 AbstractCegarLoop]: Abstraction has 3680 states and 5614 transitions. [2024-11-08 17:14:16,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 5614 transitions. [2024-11-08 17:14:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:16,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:16,126 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:16,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:14:16,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:16,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 30204943, now seen corresponding path program 1 times [2024-11-08 17:14:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520366167] [2024-11-08 17:14:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:16,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:16,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:16,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:16,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:16,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520366167] [2024-11-08 17:14:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520366167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:16,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276367570] [2024-11-08 17:14:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:16,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:16,286 INFO L87 Difference]: Start difference. First operand 3680 states and 5614 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:18,279 INFO L93 Difference]: Finished difference Result 12868 states and 19933 transitions. [2024-11-08 17:14:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:14:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:18,320 INFO L225 Difference]: With dead ends: 12868 [2024-11-08 17:14:18,320 INFO L226 Difference]: Without dead ends: 9203 [2024-11-08 17:14:18,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:14:18,330 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 888 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:18,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1519 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:14:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9203 states. [2024-11-08 17:14:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9203 to 7137. [2024-11-08 17:14:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7137 states, 6406 states have (on average 1.5121760849203871) internal successors, (9687), 6439 states have internal predecessors, (9687), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2024-11-08 17:14:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 10962 transitions. [2024-11-08 17:14:18,862 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 10962 transitions. Word has length 112 [2024-11-08 17:14:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:18,866 INFO L471 AbstractCegarLoop]: Abstraction has 7137 states and 10962 transitions. [2024-11-08 17:14:18,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 10962 transitions. [2024-11-08 17:14:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:18,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:18,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:18,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:14:18,871 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:18,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash -740528623, now seen corresponding path program 1 times [2024-11-08 17:14:18,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:18,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869204952] [2024-11-08 17:14:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:18,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:19,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:19,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:19,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:19,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869204952] [2024-11-08 17:14:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869204952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:19,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387153979] [2024-11-08 17:14:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:19,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:19,076 INFO L87 Difference]: Start difference. First operand 7137 states and 10962 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:21,686 INFO L93 Difference]: Finished difference Result 28083 states and 43621 transitions. [2024-11-08 17:14:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:14:21,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:21,754 INFO L225 Difference]: With dead ends: 28083 [2024-11-08 17:14:21,754 INFO L226 Difference]: Without dead ends: 20961 [2024-11-08 17:14:21,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:14:21,779 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 950 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:21,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1509 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:14:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2024-11-08 17:14:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 13986. [2024-11-08 17:14:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13986 states, 12583 states have (on average 1.5138679170309148) internal successors, (19049), 12648 states have internal predecessors, (19049), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2024-11-08 17:14:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13986 states to 13986 states and 21738 transitions. [2024-11-08 17:14:22,755 INFO L78 Accepts]: Start accepts. Automaton has 13986 states and 21738 transitions. Word has length 112 [2024-11-08 17:14:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:22,756 INFO L471 AbstractCegarLoop]: Abstraction has 13986 states and 21738 transitions. [2024-11-08 17:14:22,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13986 states and 21738 transitions. [2024-11-08 17:14:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:22,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:22,765 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:22,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:14:22,766 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:22,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1735222321, now seen corresponding path program 1 times [2024-11-08 17:14:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262785156] [2024-11-08 17:14:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:22,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:22,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:22,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:22,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:22,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262785156] [2024-11-08 17:14:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262785156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:22,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:22,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:22,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602741081] [2024-11-08 17:14:22,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:22,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:22,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:22,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:22,887 INFO L87 Difference]: Start difference. First operand 13986 states and 21738 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:26,586 INFO L93 Difference]: Finished difference Result 54482 states and 85515 transitions. [2024-11-08 17:14:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:14:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:26,726 INFO L225 Difference]: With dead ends: 54482 [2024-11-08 17:14:26,727 INFO L226 Difference]: Without dead ends: 40511 [2024-11-08 17:14:26,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:14:26,778 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 1148 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:26,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1026 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:14:26,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40511 states. [2024-11-08 17:14:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40511 to 27331. [2024-11-08 17:14:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27331 states, 24616 states have (on average 1.5149090022749432) internal successors, (37291), 24745 states have internal predecessors, (37291), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2024-11-08 17:14:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27331 states to 27331 states and 43230 transitions. [2024-11-08 17:14:29,068 INFO L78 Accepts]: Start accepts. Automaton has 27331 states and 43230 transitions. Word has length 112 [2024-11-08 17:14:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:29,069 INFO L471 AbstractCegarLoop]: Abstraction has 27331 states and 43230 transitions. [2024-11-08 17:14:29,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 27331 states and 43230 transitions. [2024-11-08 17:14:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:29,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:29,094 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:29,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:14:29,095 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:29,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1973468753, now seen corresponding path program 1 times [2024-11-08 17:14:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607426028] [2024-11-08 17:14:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:29,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:29,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:29,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:29,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:29,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607426028] [2024-11-08 17:14:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607426028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:29,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:29,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:29,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653257714] [2024-11-08 17:14:29,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:29,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:29,282 INFO L87 Difference]: Start difference. First operand 27331 states and 43230 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:35,640 INFO L93 Difference]: Finished difference Result 105137 states and 167761 transitions. [2024-11-08 17:14:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:14:35,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:35,877 INFO L225 Difference]: With dead ends: 105137 [2024-11-08 17:14:35,877 INFO L226 Difference]: Without dead ends: 77821 [2024-11-08 17:14:35,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:14:35,963 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 1065 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:35,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1509 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:14:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77821 states. [2024-11-08 17:14:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77821 to 54276. [2024-11-08 17:14:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54276 states, 49001 states have (on average 1.5172955653966245) internal successors, (74349), 49258 states have internal predecessors, (74349), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2024-11-08 17:14:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54276 states to 54276 states and 88118 transitions. [2024-11-08 17:14:39,993 INFO L78 Accepts]: Start accepts. Automaton has 54276 states and 88118 transitions. Word has length 112 [2024-11-08 17:14:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:39,993 INFO L471 AbstractCegarLoop]: Abstraction has 54276 states and 88118 transitions. [2024-11-08 17:14:39,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 54276 states and 88118 transitions. [2024-11-08 17:14:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:14:40,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:40,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:40,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:14:40,028 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:40,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash 14893967, now seen corresponding path program 1 times [2024-11-08 17:14:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:40,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240356405] [2024-11-08 17:14:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:40,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:40,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:40,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:14:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:40,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 17:14:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:40,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:14:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:40,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:14:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:40,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:40,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240356405] [2024-11-08 17:14:40,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240356405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:40,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:40,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:14:40,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386880475] [2024-11-08 17:14:40,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:40,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:40,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:14:40,174 INFO L87 Difference]: Start difference. First operand 54276 states and 88118 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:14:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:50,582 INFO L93 Difference]: Finished difference Result 201070 states and 330083 transitions. [2024-11-08 17:14:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:14:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 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 112 [2024-11-08 17:14:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:51,321 INFO L225 Difference]: With dead ends: 201070 [2024-11-08 17:14:51,321 INFO L226 Difference]: Without dead ends: 146809 [2024-11-08 17:14:51,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:14:51,517 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 982 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:51,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1509 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 17:14:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146809 states.