./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.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.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c775d42bfad3c45ab40b07224c097c48233d7fc79c2c6639ab29adb0162bc4be --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 17:13:28,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:13:28,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:13:28,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:13:28,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:13:28,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:13:28,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:13:28,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:13:28,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:13:28,799 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:13:28,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:13:28,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:13:28,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:13:28,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:13:28,802 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:13:28,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:13:28,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:13:28,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:13:28,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:13:28,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:13:28,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:13:28,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:13:28,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:13:28,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:13:28,810 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:13:28,810 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:13:28,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:13:28,810 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:13:28,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:13:28,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:13:28,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:13:28,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:13:28,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:13:28,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:13:28,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:13:28,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:13:28,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:13:28,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:13:28,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:13:28,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:13:28,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:13:28,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:13:28,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c775d42bfad3c45ab40b07224c097c48233d7fc79c2c6639ab29adb0162bc4be [2024-11-08 17:13:29,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:13:29,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:13:29,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:13:29,117 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:13:29,118 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:13:29,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2024-11-08 17:13:30,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:13:30,809 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:13:30,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2024-11-08 17:13:30,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616aa541f/db3ec391f4694f9aad71772ef9e4baf4/FLAG67be909c2 [2024-11-08 17:13:30,839 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616aa541f/db3ec391f4694f9aad71772ef9e4baf4 [2024-11-08 17:13:30,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:13:30,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:13:30,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:13:30,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:13:30,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:13:30,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:13:30" (1/1) ... [2024-11-08 17:13:30,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e045854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:30, skipping insertion in model container [2024-11-08 17:13:30,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:13:30" (1/1) ... [2024-11-08 17:13:30,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:13:31,066 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.04.cil-2.c[913,926] [2024-11-08 17:13:31,109 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.04.cil-2.c[5977,5990] [2024-11-08 17:13:31,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:13:31,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:13:31,190 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.04.cil-2.c[913,926] [2024-11-08 17:13:31,205 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.04.cil-2.c[5977,5990] [2024-11-08 17:13:31,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:13:31,269 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:13:31,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31 WrapperNode [2024-11-08 17:13:31,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:13:31,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:13:31,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:13:31,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:13:31,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,338 INFO L138 Inliner]: procedures = 56, calls = 61, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 609 [2024-11-08 17:13:31,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:13:31,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:13:31,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:13:31,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:13:31,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,390 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 17:13:31,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:13:31,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:13:31,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:13:31,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:13:31,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (1/1) ... [2024-11-08 17:13:31,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:13:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:31,470 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 17:13:31,473 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 17:13:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:13:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-08 17:13:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-08 17:13:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-08 17:13:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-08 17:13:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-08 17:13:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-08 17:13:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-08 17:13:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-08 17:13:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-08 17:13:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-08 17:13:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-08 17:13:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-08 17:13:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-08 17:13:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-08 17:13:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:13:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-08 17:13:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-08 17:13:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:13:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:13:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-08 17:13:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-08 17:13:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-08 17:13:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-08 17:13:31,744 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:13:31,747 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:13:32,396 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-08 17:13:32,397 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:13:32,414 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:13:32,415 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-08 17:13:32,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:13:32 BoogieIcfgContainer [2024-11-08 17:13:32,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:13:32,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:13:32,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:13:32,421 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:13:32,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:13:30" (1/3) ... [2024-11-08 17:13:32,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317b86af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:13:32, skipping insertion in model container [2024-11-08 17:13:32,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:31" (2/3) ... [2024-11-08 17:13:32,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317b86af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:13:32, skipping insertion in model container [2024-11-08 17:13:32,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:13:32" (3/3) ... [2024-11-08 17:13:32,425 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2024-11-08 17:13:32,441 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:13:32,442 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 17:13:32,525 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:13:32,531 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;@23df22af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:13:32,532 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 17:13:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 235 states have internal predecessors, (363), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-08 17:13:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 17:13:32,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:32,550 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 17:13:32,551 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:32,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:32,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1401861542, now seen corresponding path program 1 times [2024-11-08 17:13:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:32,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392756319] [2024-11-08 17:13:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:32,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:32,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:32,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:13:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:32,919 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 17:13:32,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392756319] [2024-11-08 17:13:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392756319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:32,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209258944] [2024-11-08 17:13:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:32,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:32,970 INFO L87 Difference]: Start difference. First operand has 267 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 235 states have internal predecessors, (363), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 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 17:13:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:33,501 INFO L93 Difference]: Finished difference Result 586 states and 914 transitions. [2024-11-08 17:13:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:33,504 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 17:13:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:33,519 INFO L225 Difference]: With dead ends: 586 [2024-11-08 17:13:33,519 INFO L226 Difference]: Without dead ends: 326 [2024-11-08 17:13:33,524 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 17:13:33,528 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 481 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:33,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 562 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:13:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-08 17:13:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 320. [2024-11-08 17:13:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 277 states have (on average 1.4657039711191335) internal successors, (406), 282 states have internal predecessors, (406), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2024-11-08 17:13:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 468 transitions. [2024-11-08 17:13:33,608 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 468 transitions. Word has length 44 [2024-11-08 17:13:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:33,609 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 468 transitions. [2024-11-08 17:13:33,609 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 17:13:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 468 transitions. [2024-11-08 17:13:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:13:33,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:33,613 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 17:13:33,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:13:33,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:33,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2014891897, now seen corresponding path program 1 times [2024-11-08 17:13:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:33,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896769072] [2024-11-08 17:13:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:33,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:33,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:33,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:13:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:33,754 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 17:13:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896769072] [2024-11-08 17:13:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896769072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:33,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:33,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753671938] [2024-11-08 17:13:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:33,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:33,758 INFO L87 Difference]: Start difference. First operand 320 states and 468 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 17:13:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:34,165 INFO L93 Difference]: Finished difference Result 568 states and 808 transitions. [2024-11-08 17:13:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:34,166 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 17:13:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:34,171 INFO L225 Difference]: With dead ends: 568 [2024-11-08 17:13:34,171 INFO L226 Difference]: Without dead ends: 444 [2024-11-08 17:13:34,176 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 17:13:34,177 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 210 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:34,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 740 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:13:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-08 17:13:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 387. [2024-11-08 17:13:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 338 states have (on average 1.4497041420118344) internal successors, (490), 343 states have internal predecessors, (490), 33 states have call successors, (33), 15 states have call predecessors, (33), 14 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2024-11-08 17:13:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 558 transitions. [2024-11-08 17:13:34,234 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 558 transitions. Word has length 45 [2024-11-08 17:13:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:34,235 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 558 transitions. [2024-11-08 17:13:34,235 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 17:13:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 558 transitions. [2024-11-08 17:13:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:13:34,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:34,240 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 17:13:34,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:13:34,241 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:34,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 995717938, now seen corresponding path program 1 times [2024-11-08 17:13:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374310844] [2024-11-08 17:13:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:34,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:13:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,326 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 17:13:34,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374310844] [2024-11-08 17:13:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374310844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641839549] [2024-11-08 17:13:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:34,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:34,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:34,331 INFO L87 Difference]: Start difference. First operand 387 states and 558 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 17:13:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:34,654 INFO L93 Difference]: Finished difference Result 795 states and 1117 transitions. [2024-11-08 17:13:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:34,654 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 17:13:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:34,658 INFO L225 Difference]: With dead ends: 795 [2024-11-08 17:13:34,658 INFO L226 Difference]: Without dead ends: 604 [2024-11-08 17:13:34,659 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 17:13:34,660 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 491 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:34,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 553 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:13:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-08 17:13:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 552. [2024-11-08 17:13:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 484 states have (on average 1.4049586776859504) internal successors, (680), 492 states have internal predecessors, (680), 44 states have call successors, (44), 22 states have call predecessors, (44), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2024-11-08 17:13:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 776 transitions. [2024-11-08 17:13:34,701 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 776 transitions. Word has length 45 [2024-11-08 17:13:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:34,702 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 776 transitions. [2024-11-08 17:13:34,702 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 17:13:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 776 transitions. [2024-11-08 17:13:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:13:34,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:34,709 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 17:13:34,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:13:34,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:34,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash 377619894, now seen corresponding path program 1 times [2024-11-08 17:13:34,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:34,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545316049] [2024-11-08 17:13:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 17:13:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:34,818 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 17:13:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:34,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545316049] [2024-11-08 17:13:34,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545316049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:34,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:34,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:34,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184991273] [2024-11-08 17:13:34,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:34,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:34,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:34,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:34,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:34,820 INFO L87 Difference]: Start difference. First operand 552 states and 776 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 17:13:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:35,164 INFO L93 Difference]: Finished difference Result 1136 states and 1561 transitions. [2024-11-08 17:13:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:35,165 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 17:13:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:35,170 INFO L225 Difference]: With dead ends: 1136 [2024-11-08 17:13:35,170 INFO L226 Difference]: Without dead ends: 780 [2024-11-08 17:13:35,171 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 17:13:35,172 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 194 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:35,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 793 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:13:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-11-08 17:13:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 742. [2024-11-08 17:13:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 650 states have (on average 1.353846153846154) internal successors, (880), 660 states have internal predecessors, (880), 58 states have call successors, (58), 30 states have call predecessors, (58), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2024-11-08 17:13:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1014 transitions. [2024-11-08 17:13:35,220 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1014 transitions. Word has length 62 [2024-11-08 17:13:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:35,221 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 1014 transitions. [2024-11-08 17:13:35,221 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 17:13:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1014 transitions. [2024-11-08 17:13:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:13:35,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:35,226 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 17:13:35,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:13:35,226 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:35,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1247449564, now seen corresponding path program 1 times [2024-11-08 17:13:35,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:35,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357002695] [2024-11-08 17:13:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:35,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 17:13:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 17:13:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,289 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 17:13:35,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357002695] [2024-11-08 17:13:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357002695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:35,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:35,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299243707] [2024-11-08 17:13:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:35,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:13:35,292 INFO L87 Difference]: Start difference. First operand 742 states and 1014 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 17:13:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:35,606 INFO L93 Difference]: Finished difference Result 1395 states and 1867 transitions. [2024-11-08 17:13:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:13:35,607 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 17:13:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:35,615 INFO L225 Difference]: With dead ends: 1395 [2024-11-08 17:13:35,616 INFO L226 Difference]: Without dead ends: 941 [2024-11-08 17:13:35,617 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 17:13:35,618 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 478 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:35,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 552 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:13:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-08 17:13:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 886. [2024-11-08 17:13:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 778 states have (on average 1.3251928020565553) internal successors, (1031), 790 states have internal predecessors, (1031), 66 states have call successors, (66), 36 states have call predecessors, (66), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2024-11-08 17:13:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1187 transitions. [2024-11-08 17:13:35,682 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1187 transitions. Word has length 67 [2024-11-08 17:13:35,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:35,682 INFO L471 AbstractCegarLoop]: Abstraction has 886 states and 1187 transitions. [2024-11-08 17:13:35,682 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 17:13:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1187 transitions. [2024-11-08 17:13:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:13:35,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:35,685 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:35,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:13:35,685 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:35,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2071057538, now seen corresponding path program 1 times [2024-11-08 17:13:35,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:35,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452346738] [2024-11-08 17:13:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:35,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:13:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 17:13:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:13:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:35,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452346738] [2024-11-08 17:13:35,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452346738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:35,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79551562] [2024-11-08 17:13:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:35,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:35,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:35,844 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 17:13:35,845 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 17:13:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:35,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:13:35,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:13:35,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:13:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79551562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:35,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:13:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 17:13:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625534188] [2024-11-08 17:13:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:35,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:13:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:13:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:35,988 INFO L87 Difference]: Start difference. First operand 886 states and 1187 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 17:13:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:36,031 INFO L93 Difference]: Finished difference Result 1429 states and 1910 transitions. [2024-11-08 17:13:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:13:36,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-08 17:13:36,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:36,036 INFO L225 Difference]: With dead ends: 1429 [2024-11-08 17:13:36,037 INFO L226 Difference]: Without dead ends: 884 [2024-11-08 17:13:36,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 17:13:36,039 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 72 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:36,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 775 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:13:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-08 17:13:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 840. [2024-11-08 17:13:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 738 states have (on average 1.3089430894308942) internal successors, (966), 750 states have internal predecessors, (966), 62 states have call successors, (62), 34 states have call predecessors, (62), 38 states have return successors, (84), 56 states have call predecessors, (84), 58 states have call successors, (84) [2024-11-08 17:13:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1112 transitions. [2024-11-08 17:13:36,078 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1112 transitions. Word has length 68 [2024-11-08 17:13:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:36,079 INFO L471 AbstractCegarLoop]: Abstraction has 840 states and 1112 transitions. [2024-11-08 17:13:36,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 17:13:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1112 transitions. [2024-11-08 17:13:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:13:36,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:36,081 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 17:13:36,099 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 17:13:36,281 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 17:13:36,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:36,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -43937983, now seen corresponding path program 1 times [2024-11-08 17:13:36,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:36,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950196402] [2024-11-08 17:13:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:36,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:36,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:13:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:36,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 17:13:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:36,390 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 17:13:36,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:36,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950196402] [2024-11-08 17:13:36,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950196402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:36,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984099759] [2024-11-08 17:13:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:36,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:36,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:36,393 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 17:13:36,396 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 17:13:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:36,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:13:36,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:36,576 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 17:13:36,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:36,651 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 17:13:36,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984099759] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:36,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:13:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-08 17:13:36,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77080593] [2024-11-08 17:13:36,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:36,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:13:36,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:36,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:13:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:13:36,654 INFO L87 Difference]: Start difference. First operand 840 states and 1112 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 17:13:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:36,788 INFO L93 Difference]: Finished difference Result 892 states and 1174 transitions. [2024-11-08 17:13:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:13:36,788 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 17:13:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:36,793 INFO L225 Difference]: With dead ends: 892 [2024-11-08 17:13:36,793 INFO L226 Difference]: Without dead ends: 889 [2024-11-08 17:13:36,794 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 17:13:36,795 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 661 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:36,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 463 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:13:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-08 17:13:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 839. [2024-11-08 17:13:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 738 states have (on average 1.3062330623306233) internal successors, (964), 749 states have internal predecessors, (964), 61 states have call successors, (61), 34 states have call predecessors, (61), 38 states have return successors, (84), 56 states have call predecessors, (84), 58 states have call successors, (84) [2024-11-08 17:13:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1109 transitions. [2024-11-08 17:13:36,840 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1109 transitions. Word has length 68 [2024-11-08 17:13:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:36,841 INFO L471 AbstractCegarLoop]: Abstraction has 839 states and 1109 transitions. [2024-11-08 17:13:36,841 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 17:13:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1109 transitions. [2024-11-08 17:13:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 17:13:36,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:36,843 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 17:13:36,861 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 17:13:37,047 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 17:13:37,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:37,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1362916185, now seen corresponding path program 1 times [2024-11-08 17:13:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:37,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483575079] [2024-11-08 17:13:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:37,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:37,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:13:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:37,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 17:13:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:37,148 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 17:13:37,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:37,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483575079] [2024-11-08 17:13:37,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483575079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177966921] [2024-11-08 17:13:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:37,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:37,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:37,151 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 17:13:37,152 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 17:13:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:37,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:13:37,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:37,559 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 17:13:37,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:37,643 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 17:13:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177966921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:37,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-08 17:13:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278698890] [2024-11-08 17:13:37,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:37,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:13:37,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:13:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:13:37,647 INFO L87 Difference]: Start difference. First operand 839 states and 1109 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 17:13:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:38,643 INFO L93 Difference]: Finished difference Result 2156 states and 2815 transitions. [2024-11-08 17:13:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:13:38,644 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 17:13:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:38,653 INFO L225 Difference]: With dead ends: 2156 [2024-11-08 17:13:38,653 INFO L226 Difference]: Without dead ends: 1660 [2024-11-08 17:13:38,655 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 17:13:38,657 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 688 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:38,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 2294 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:13:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2024-11-08 17:13:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1192. [2024-11-08 17:13:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1052 states have (on average 1.2756653992395437) internal successors, (1342), 1071 states have internal predecessors, (1342), 81 states have call successors, (81), 48 states have call predecessors, (81), 57 states have return successors, (118), 73 states have call predecessors, (118), 78 states have call successors, (118) [2024-11-08 17:13:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1541 transitions. [2024-11-08 17:13:38,734 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1541 transitions. Word has length 69 [2024-11-08 17:13:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:38,734 INFO L471 AbstractCegarLoop]: Abstraction has 1192 states and 1541 transitions. [2024-11-08 17:13:38,734 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 17:13:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1541 transitions. [2024-11-08 17:13:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 17:13:38,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:38,737 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 17:13:38,754 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 17:13:38,941 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 17:13:38,943 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:38,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2127835896, now seen corresponding path program 1 times [2024-11-08 17:13:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977226120] [2024-11-08 17:13:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:13:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 17:13:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:13:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,063 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 17:13:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977226120] [2024-11-08 17:13:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977226120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199959570] [2024-11-08 17:13:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:39,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:39,068 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 17:13:39,069 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 17:13:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:13:39,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:39,206 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 17:13:39,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:13:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199959570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:39,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:13:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 17:13:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951928152] [2024-11-08 17:13:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:39,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:13:39,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:13:39,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:39,209 INFO L87 Difference]: Start difference. First operand 1192 states and 1541 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 17:13:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:39,267 INFO L93 Difference]: Finished difference Result 1857 states and 2382 transitions. [2024-11-08 17:13:39,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:13:39,267 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 17:13:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:39,273 INFO L225 Difference]: With dead ends: 1857 [2024-11-08 17:13:39,273 INFO L226 Difference]: Without dead ends: 1114 [2024-11-08 17:13:39,275 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 17:13:39,276 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 335 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 478 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 17:13:39,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 478 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:13:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-08 17:13:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1105. [2024-11-08 17:13:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 975 states have (on average 1.2697435897435898) internal successors, (1238), 993 states have internal predecessors, (1238), 77 states have call successors, (77), 44 states have call predecessors, (77), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2024-11-08 17:13:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1425 transitions. [2024-11-08 17:13:39,329 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1425 transitions. Word has length 88 [2024-11-08 17:13:39,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:39,329 INFO L471 AbstractCegarLoop]: Abstraction has 1105 states and 1425 transitions. [2024-11-08 17:13:39,329 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 17:13:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1425 transitions. [2024-11-08 17:13:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:39,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:39,352 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] [2024-11-08 17:13:39,370 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 17:13:39,552 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 17:13:39,553 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:39,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash -433974977, now seen corresponding path program 1 times [2024-11-08 17:13:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303952703] [2024-11-08 17:13:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:39,632 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 17:13:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:39,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303952703] [2024-11-08 17:13:39,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303952703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:39,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:13:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206619157] [2024-11-08 17:13:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:39,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:13:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:13:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:13:39,635 INFO L87 Difference]: Start difference. First operand 1105 states and 1425 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:40,369 INFO L93 Difference]: Finished difference Result 1338 states and 1786 transitions. [2024-11-08 17:13:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:13:40,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:40,376 INFO L225 Difference]: With dead ends: 1338 [2024-11-08 17:13:40,376 INFO L226 Difference]: Without dead ends: 1159 [2024-11-08 17:13:40,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:13:40,378 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 511 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:40,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 614 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:13:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-08 17:13:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1105. [2024-11-08 17:13:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 975 states have (on average 1.2687179487179487) internal successors, (1237), 993 states have internal predecessors, (1237), 77 states have call successors, (77), 44 states have call predecessors, (77), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2024-11-08 17:13:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1424 transitions. [2024-11-08 17:13:40,482 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1424 transitions. Word has length 91 [2024-11-08 17:13:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:40,482 INFO L471 AbstractCegarLoop]: Abstraction has 1105 states and 1424 transitions. [2024-11-08 17:13:40,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1424 transitions. [2024-11-08 17:13:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:40,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:40,485 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] [2024-11-08 17:13:40,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:13:40,486 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:40,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash -674214723, now seen corresponding path program 1 times [2024-11-08 17:13:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:40,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555983956] [2024-11-08 17:13:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:40,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:40,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:40,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:40,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:40,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:40,599 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 17:13:40,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:40,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555983956] [2024-11-08 17:13:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555983956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:40,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:40,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:13:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708107406] [2024-11-08 17:13:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:40,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:13:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:13:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:13:40,601 INFO L87 Difference]: Start difference. First operand 1105 states and 1424 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:41,838 INFO L93 Difference]: Finished difference Result 1569 states and 2145 transitions. [2024-11-08 17:13:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:13:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:41,846 INFO L225 Difference]: With dead ends: 1569 [2024-11-08 17:13:41,846 INFO L226 Difference]: Without dead ends: 1392 [2024-11-08 17:13:41,848 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 17:13:41,848 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 811 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:41,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 880 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:13:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2024-11-08 17:13:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1283. [2024-11-08 17:13:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1133 states have (on average 1.3062665489849956) internal successors, (1480), 1152 states have internal predecessors, (1480), 90 states have call successors, (90), 50 states have call predecessors, (90), 58 states have return successors, (126), 81 states have call predecessors, (126), 87 states have call successors, (126) [2024-11-08 17:13:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1696 transitions. [2024-11-08 17:13:41,935 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1696 transitions. Word has length 91 [2024-11-08 17:13:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:41,935 INFO L471 AbstractCegarLoop]: Abstraction has 1283 states and 1696 transitions. [2024-11-08 17:13:41,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1696 transitions. [2024-11-08 17:13:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:41,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:41,938 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] [2024-11-08 17:13:41,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:13:41,939 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:41,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1543415675, now seen corresponding path program 1 times [2024-11-08 17:13:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009127591] [2024-11-08 17:13:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:42,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:42,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:42,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:42,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:42,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:42,113 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 17:13:42,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009127591] [2024-11-08 17:13:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009127591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969441978] [2024-11-08 17:13:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:42,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:42,116 INFO L87 Difference]: Start difference. First operand 1283 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:43,760 INFO L93 Difference]: Finished difference Result 1984 states and 2783 transitions. [2024-11-08 17:13:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:13:43,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:43,770 INFO L225 Difference]: With dead ends: 1984 [2024-11-08 17:13:43,770 INFO L226 Difference]: Without dead ends: 1629 [2024-11-08 17:13:43,772 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 17:13:43,773 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 818 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:43,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1536 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:13:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-11-08 17:13:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1451. [2024-11-08 17:13:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1281 states have (on average 1.3294301327088212) internal successors, (1703), 1301 states have internal predecessors, (1703), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2024-11-08 17:13:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1947 transitions. [2024-11-08 17:13:43,893 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1947 transitions. Word has length 91 [2024-11-08 17:13:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:43,894 INFO L471 AbstractCegarLoop]: Abstraction has 1451 states and 1947 transitions. [2024-11-08 17:13:43,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1947 transitions. [2024-11-08 17:13:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:43,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:43,897 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] [2024-11-08 17:13:43,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:13:43,898 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:43,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1864328775, now seen corresponding path program 1 times [2024-11-08 17:13:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:43,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409347254] [2024-11-08 17:13:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:43,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:44,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:44,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:44,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:44,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:44,053 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 17:13:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409347254] [2024-11-08 17:13:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409347254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:44,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:44,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:44,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185277640] [2024-11-08 17:13:44,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:44,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:44,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:44,056 INFO L87 Difference]: Start difference. First operand 1451 states and 1947 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:44,969 INFO L93 Difference]: Finished difference Result 2152 states and 3040 transitions. [2024-11-08 17:13:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:13:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:44,979 INFO L225 Difference]: With dead ends: 2152 [2024-11-08 17:13:44,979 INFO L226 Difference]: Without dead ends: 1629 [2024-11-08 17:13:44,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:13:44,982 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 641 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:44,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 894 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:13:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-11-08 17:13:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1451. [2024-11-08 17:13:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1281 states have (on average 1.327088212334114) internal successors, (1700), 1301 states have internal predecessors, (1700), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2024-11-08 17:13:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1944 transitions. [2024-11-08 17:13:45,162 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1944 transitions. Word has length 91 [2024-11-08 17:13:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:45,162 INFO L471 AbstractCegarLoop]: Abstraction has 1451 states and 1944 transitions. [2024-11-08 17:13:45,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1944 transitions. [2024-11-08 17:13:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:45,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:45,165 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] [2024-11-08 17:13:45,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:13:45,165 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:45,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash 519595963, now seen corresponding path program 1 times [2024-11-08 17:13:45,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:45,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907164935] [2024-11-08 17:13:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:45,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:45,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:45,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:45,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:45,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:45,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:45,321 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 17:13:45,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:45,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907164935] [2024-11-08 17:13:45,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907164935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:45,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:45,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131203213] [2024-11-08 17:13:45,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:45,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:45,323 INFO L87 Difference]: Start difference. First operand 1451 states and 1944 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:46,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:46,913 INFO L93 Difference]: Finished difference Result 2589 states and 3690 transitions. [2024-11-08 17:13:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:13:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:46,924 INFO L225 Difference]: With dead ends: 2589 [2024-11-08 17:13:46,925 INFO L226 Difference]: Without dead ends: 2066 [2024-11-08 17:13:46,927 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 17:13:46,928 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 806 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:46,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1534 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:13:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2024-11-08 17:13:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1793. [2024-11-08 17:13:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1583 states have (on average 1.3600758054327227) internal successors, (2153), 1605 states have internal predecessors, (2153), 129 states have call successors, (129), 68 states have call predecessors, (129), 79 states have return successors, (175), 123 states have call predecessors, (175), 126 states have call successors, (175) [2024-11-08 17:13:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2457 transitions. [2024-11-08 17:13:47,097 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2457 transitions. Word has length 91 [2024-11-08 17:13:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:47,097 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2457 transitions. [2024-11-08 17:13:47,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2457 transitions. [2024-11-08 17:13:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:47,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:47,101 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] [2024-11-08 17:13:47,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:13:47,101 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:47,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 596496761, now seen corresponding path program 1 times [2024-11-08 17:13:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294467419] [2024-11-08 17:13:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:47,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:47,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:47,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:47,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:47,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:47,256 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 17:13:47,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:47,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294467419] [2024-11-08 17:13:47,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294467419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:47,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:47,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52160424] [2024-11-08 17:13:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:47,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:47,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:47,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:47,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:47,258 INFO L87 Difference]: Start difference. First operand 1793 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:48,967 INFO L93 Difference]: Finished difference Result 4035 states and 5873 transitions. [2024-11-08 17:13:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:13:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:48,983 INFO L225 Difference]: With dead ends: 4035 [2024-11-08 17:13:48,983 INFO L226 Difference]: Without dead ends: 3170 [2024-11-08 17:13:48,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:13:48,989 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 979 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:48,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1524 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:13:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2024-11-08 17:13:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2466. [2024-11-08 17:13:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2180 states have (on average 1.3995412844036696) internal successors, (3051), 2206 states have internal predecessors, (3051), 177 states have call successors, (177), 92 states have call predecessors, (177), 107 states have return successors, (245), 175 states have call predecessors, (245), 174 states have call successors, (245) [2024-11-08 17:13:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3473 transitions. [2024-11-08 17:13:49,251 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3473 transitions. Word has length 91 [2024-11-08 17:13:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:49,251 INFO L471 AbstractCegarLoop]: Abstraction has 2466 states and 3473 transitions. [2024-11-08 17:13:49,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3473 transitions. [2024-11-08 17:13:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:49,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:49,255 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] [2024-11-08 17:13:49,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:13:49,256 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:49,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash -370853893, now seen corresponding path program 1 times [2024-11-08 17:13:49,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:49,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927101760] [2024-11-08 17:13:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:49,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:49,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:49,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:49,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:49,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:49,395 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 17:13:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927101760] [2024-11-08 17:13:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927101760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:49,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056627785] [2024-11-08 17:13:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:49,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:49,397 INFO L87 Difference]: Start difference. First operand 2466 states and 3473 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:50,955 INFO L93 Difference]: Finished difference Result 6534 states and 9667 transitions. [2024-11-08 17:13:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:13:50,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:50,981 INFO L225 Difference]: With dead ends: 6534 [2024-11-08 17:13:50,982 INFO L226 Difference]: Without dead ends: 4996 [2024-11-08 17:13:50,988 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 17:13:50,988 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 836 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:50,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1520 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:13:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2024-11-08 17:13:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 3727. [2024-11-08 17:13:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 3293 states have (on average 1.4287883389006983) internal successors, (4705), 3327 states have internal predecessors, (4705), 269 states have call successors, (269), 140 states have call predecessors, (269), 163 states have return successors, (399), 275 states have call predecessors, (399), 266 states have call successors, (399) [2024-11-08 17:13:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5373 transitions. [2024-11-08 17:13:51,324 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5373 transitions. Word has length 91 [2024-11-08 17:13:51,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:51,325 INFO L471 AbstractCegarLoop]: Abstraction has 3727 states and 5373 transitions. [2024-11-08 17:13:51,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5373 transitions. [2024-11-08 17:13:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:51,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:51,330 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] [2024-11-08 17:13:51,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:13:51,331 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:51,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:51,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1537603897, now seen corresponding path program 1 times [2024-11-08 17:13:51,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:51,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337972844] [2024-11-08 17:13:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:51,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:51,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:51,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:51,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:51,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:51,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:51,464 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 17:13:51,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:51,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337972844] [2024-11-08 17:13:51,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337972844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:51,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:51,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913594842] [2024-11-08 17:13:51,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:51,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:51,466 INFO L87 Difference]: Start difference. First operand 3727 states and 5373 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:52,389 INFO L93 Difference]: Finished difference Result 7270 states and 10831 transitions. [2024-11-08 17:13:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:13:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:52,415 INFO L225 Difference]: With dead ends: 7270 [2024-11-08 17:13:52,415 INFO L226 Difference]: Without dead ends: 4471 [2024-11-08 17:13:52,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:13:52,427 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 640 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:52,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 892 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:13:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2024-11-08 17:13:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 3727. [2024-11-08 17:13:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 3293 states have (on average 1.4236258730640754) internal successors, (4688), 3327 states have internal predecessors, (4688), 269 states have call successors, (269), 140 states have call predecessors, (269), 163 states have return successors, (399), 275 states have call predecessors, (399), 266 states have call successors, (399) [2024-11-08 17:13:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5356 transitions. [2024-11-08 17:13:52,800 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5356 transitions. Word has length 91 [2024-11-08 17:13:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:52,800 INFO L471 AbstractCegarLoop]: Abstraction has 3727 states and 5356 transitions. [2024-11-08 17:13:52,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:52,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5356 transitions. [2024-11-08 17:13:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:52,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:52,805 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] [2024-11-08 17:13:52,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:13:52,806 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:52,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1044977723, now seen corresponding path program 1 times [2024-11-08 17:13:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:52,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657082664] [2024-11-08 17:13:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:52,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:52,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:52,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:52,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:52,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:52,947 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 17:13:52,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657082664] [2024-11-08 17:13:52,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657082664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:52,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:52,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:13:52,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409270564] [2024-11-08 17:13:52,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:52,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:13:52,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:13:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:52,950 INFO L87 Difference]: Start difference. First operand 3727 states and 5356 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:54,680 INFO L93 Difference]: Finished difference Result 10903 states and 16213 transitions. [2024-11-08 17:13:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:13:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:54,717 INFO L225 Difference]: With dead ends: 10903 [2024-11-08 17:13:54,717 INFO L226 Difference]: Without dead ends: 8104 [2024-11-08 17:13:54,730 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 17:13:54,730 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 845 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:54,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1065 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:13:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2024-11-08 17:13:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 6337. [2024-11-08 17:13:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 5615 states have (on average 1.451113089937667) internal successors, (8148), 5665 states have internal predecessors, (8148), 445 states have call successors, (445), 236 states have call predecessors, (445), 275 states have return successors, (753), 467 states have call predecessors, (753), 442 states have call successors, (753) [2024-11-08 17:13:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9346 transitions. [2024-11-08 17:13:55,538 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9346 transitions. Word has length 91 [2024-11-08 17:13:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:55,539 INFO L471 AbstractCegarLoop]: Abstraction has 6337 states and 9346 transitions. [2024-11-08 17:13:55,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9346 transitions. [2024-11-08 17:13:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:13:55,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:55,546 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] [2024-11-08 17:13:55,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:13:55,546 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:55,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1998917881, now seen corresponding path program 1 times [2024-11-08 17:13:55,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:55,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209590239] [2024-11-08 17:13:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:55,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:13:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:55,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:13:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:55,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:13:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:55,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:13:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:55,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:13:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:55,664 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 17:13:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209590239] [2024-11-08 17:13:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209590239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:55,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:55,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:13:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739667488] [2024-11-08 17:13:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:55,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:13:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:13:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:13:55,667 INFO L87 Difference]: Start difference. First operand 6337 states and 9346 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:57,537 INFO L93 Difference]: Finished difference Result 16372 states and 24603 transitions. [2024-11-08 17:13:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:13:57,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-08 17:13:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:57,580 INFO L225 Difference]: With dead ends: 16372 [2024-11-08 17:13:57,580 INFO L226 Difference]: Without dead ends: 10964 [2024-11-08 17:13:57,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:13:57,601 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 1000 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:57,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1129 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:13:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2024-11-08 17:13:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 9059. [2024-11-08 17:13:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 8013 states have (on average 1.4513914888306503) internal successors, (11630), 8096 states have internal predecessors, (11630), 651 states have call successors, (651), 338 states have call predecessors, (651), 393 states have return successors, (1041), 656 states have call predecessors, (1041), 648 states have call successors, (1041) [2024-11-08 17:13:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13322 transitions. [2024-11-08 17:13:58,597 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 13322 transitions. Word has length 91 [2024-11-08 17:13:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:58,598 INFO L471 AbstractCegarLoop]: Abstraction has 9059 states and 13322 transitions. [2024-11-08 17:13:58,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:13:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 13322 transitions. [2024-11-08 17:13:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:13:58,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:58,614 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 17:13:58,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:13:58,615 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:58,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:58,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1789681823, now seen corresponding path program 1 times [2024-11-08 17:13:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52931724] [2024-11-08 17:13:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 17:13:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 17:13:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 17:13:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 17:13:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-08 17:13:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,719 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 17:13:58,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:58,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52931724] [2024-11-08 17:13:58,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52931724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:58,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16093436] [2024-11-08 17:13:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:13:58,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:58,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:13:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:13:58,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:58,858 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 17:13:58,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:13:58,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16093436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:58,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:13:58,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 17:13:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267644391] [2024-11-08 17:13:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:58,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:13:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:13:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:13:58,863 INFO L87 Difference]: Start difference. First operand 9059 states and 13322 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 17:13:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:59,476 INFO L93 Difference]: Finished difference Result 9436 states and 13783 transitions. [2024-11-08 17:13:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:13:59,476 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 17:13:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:59,509 INFO L225 Difference]: With dead ends: 9436 [2024-11-08 17:13:59,510 INFO L226 Difference]: Without dead ends: 8144 [2024-11-08 17:13:59,519 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 17:13:59,520 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 61 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 765 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 17:13:59,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 765 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:13:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2024-11-08 17:14:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 8144. [2024-11-08 17:14:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8144 states, 7201 states have (on average 1.4774336897653104) internal successors, (10639), 7268 states have internal predecessors, (10639), 594 states have call successors, (594), 301 states have call predecessors, (594), 348 states have return successors, (949), 606 states have call predecessors, (949), 592 states have call successors, (949) [2024-11-08 17:14:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 12182 transitions. [2024-11-08 17:14:00,186 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 12182 transitions. Word has length 103 [2024-11-08 17:14:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:00,187 INFO L471 AbstractCegarLoop]: Abstraction has 8144 states and 12182 transitions. [2024-11-08 17:14:00,187 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 17:14:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 12182 transitions. [2024-11-08 17:14:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 17:14:00,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:00,205 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:00,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:00,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:00,410 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:00,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1407605105, now seen corresponding path program 1 times [2024-11-08 17:14:00,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:00,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982258333] [2024-11-08 17:14:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:14:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:14:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:14:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:14:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 17:14:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 17:14:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 17:14:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:14:00,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982258333] [2024-11-08 17:14:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982258333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:00,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220252616] [2024-11-08 17:14:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:00,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:00,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:00,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:00,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:14:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:14:00,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 17:14:00,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:14:00,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220252616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:00,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:14:00,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 17:14:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933754770] [2024-11-08 17:14:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:00,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:00,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:00,752 INFO L87 Difference]: Start difference. First operand 8144 states and 12182 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 17:14:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:02,002 INFO L93 Difference]: Finished difference Result 24225 states and 36480 transitions. [2024-11-08 17:14:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:14:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2024-11-08 17:14:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:02,072 INFO L225 Difference]: With dead ends: 24225 [2024-11-08 17:14:02,072 INFO L226 Difference]: Without dead ends: 16095 [2024-11-08 17:14:02,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:02,106 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 231 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:02,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 576 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:14:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16095 states. [2024-11-08 17:14:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16095 to 15991. [2024-11-08 17:14:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15991 states, 14138 states have (on average 1.475456217286745) internal successors, (20860), 14270 states have internal predecessors, (20860), 1156 states have call successors, (1156), 601 states have call predecessors, (1156), 696 states have return successors, (1837), 1151 states have call predecessors, (1837), 1154 states have call successors, (1837) [2024-11-08 17:14:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15991 states to 15991 states and 23853 transitions. [2024-11-08 17:14:03,731 INFO L78 Accepts]: Start accepts. Automaton has 15991 states and 23853 transitions. Word has length 148 [2024-11-08 17:14:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:03,732 INFO L471 AbstractCegarLoop]: Abstraction has 15991 states and 23853 transitions. [2024-11-08 17:14:03,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 17:14:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 15991 states and 23853 transitions. [2024-11-08 17:14:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 17:14:03,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:03,767 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:03,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:14:03,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:03,969 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:03,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1503564177, now seen corresponding path program 1 times [2024-11-08 17:14:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056737247] [2024-11-08 17:14:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:03,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:14:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:14:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:14:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:14:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 17:14:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 17:14:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 17:14:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:14:04,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056737247] [2024-11-08 17:14:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056737247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568400325] [2024-11-08 17:14:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:04,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:04,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:14:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:14:04,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 17:14:04,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:14:04,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568400325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:04,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:14:04,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 17:14:04,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803222350] [2024-11-08 17:14:04,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:04,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:04,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:04,315 INFO L87 Difference]: Start difference. First operand 15991 states and 23853 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 17:14:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:06,517 INFO L93 Difference]: Finished difference Result 47588 states and 71475 transitions. [2024-11-08 17:14:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:14:06,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2024-11-08 17:14:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:06,660 INFO L225 Difference]: With dead ends: 47588 [2024-11-08 17:14:06,660 INFO L226 Difference]: Without dead ends: 31611 [2024-11-08 17:14:06,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:06,713 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 219 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:06,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 530 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:14:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31611 states. [2024-11-08 17:14:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31611 to 31407. [2024-11-08 17:14:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31407 states, 27760 states have (on average 1.473342939481268) internal successors, (40900), 28022 states have internal predecessors, (40900), 2254 states have call successors, (2254), 1201 states have call predecessors, (2254), 1392 states have return successors, (3587), 2215 states have call predecessors, (3587), 2252 states have call successors, (3587) [2024-11-08 17:14:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31407 states to 31407 states and 46741 transitions. [2024-11-08 17:14:09,585 INFO L78 Accepts]: Start accepts. Automaton has 31407 states and 46741 transitions. Word has length 148 [2024-11-08 17:14:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:09,585 INFO L471 AbstractCegarLoop]: Abstraction has 31407 states and 46741 transitions. [2024-11-08 17:14:09,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 17:14:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 31407 states and 46741 transitions. [2024-11-08 17:14:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 17:14:09,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:09,646 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:09,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:14:09,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:09,848 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:09,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1999504975, now seen corresponding path program 1 times [2024-11-08 17:14:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:09,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937880060] [2024-11-08 17:14:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:09,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:09,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:14:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:09,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:14:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:09,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:14:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:14:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 17:14:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 17:14:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 17:14:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:14:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937880060] [2024-11-08 17:14:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937880060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783427547] [2024-11-08 17:14:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:10,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:10,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:10,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:10,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:14:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:10,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:14:10,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 17:14:10,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:14:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783427547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:10,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:14:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 17:14:10,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687776920] [2024-11-08 17:14:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:10,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:10,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:10,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:10,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:10,209 INFO L87 Difference]: Start difference. First operand 31407 states and 46741 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 17:14:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:14,539 INFO L93 Difference]: Finished difference Result 92639 states and 139234 transitions. [2024-11-08 17:14:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:14:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 148 [2024-11-08 17:14:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:15,044 INFO L225 Difference]: With dead ends: 92639 [2024-11-08 17:14:15,045 INFO L226 Difference]: Without dead ends: 61247 [2024-11-08 17:14:15,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:15,139 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 235 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:15,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 800 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:14:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61247 states. [2024-11-08 17:14:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61247 to 61247. [2024-11-08 17:14:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61247 states, 54093 states have (on average 1.4646627105170724) internal successors, (79228), 54548 states have internal predecessors, (79228), 4369 states have call successors, (4369), 2401 states have call predecessors, (4369), 2784 states have return successors, (7950), 4361 states have call predecessors, (7950), 4367 states have call successors, (7950) [2024-11-08 17:14:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61247 states to 61247 states and 91547 transitions. [2024-11-08 17:14:20,084 INFO L78 Accepts]: Start accepts. Automaton has 61247 states and 91547 transitions. Word has length 148 [2024-11-08 17:14:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:20,085 INFO L471 AbstractCegarLoop]: Abstraction has 61247 states and 91547 transitions. [2024-11-08 17:14:20,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 17:14:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 61247 states and 91547 transitions. [2024-11-08 17:14:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 17:14:20,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:20,506 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:20,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:20,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 17:14:20,712 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:14:20,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1363648872, now seen corresponding path program 1 times [2024-11-08 17:14:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083744509] [2024-11-08 17:14:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 17:14:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:14:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 17:14:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:14:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:14:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 17:14:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 17:14:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-08 17:14:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 17:14:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-11-08 17:14:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-08 17:14:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083744509] [2024-11-08 17:14:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083744509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845011059] [2024-11-08 17:14:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:20,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 17:14:20,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:20,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:14:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:21,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:14:21,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 17:14:21,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:14:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845011059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:21,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:14:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 17:14:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67436183] [2024-11-08 17:14:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:21,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:14:21,216 INFO L87 Difference]: Start difference. First operand 61247 states and 91547 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)