./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.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 a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:41:14,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:41:15,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:41:15,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:41:15,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:41:15,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:41:15,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:41:15,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:41:15,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:41:15,065 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:41:15,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:41:15,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:41:15,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:41:15,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:41:15,068 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:41:15,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:41:15,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:41:15,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:41:15,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:41:15,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:41:15,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:41:15,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:41:15,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:41:15,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:41:15,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:41:15,075 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:41:15,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:41:15,075 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:41:15,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:41:15,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:41:15,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:41:15,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:41:15,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:41:15,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:41:15,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:41:15,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:41:15,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:41:15,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:41:15,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:41:15,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:41:15,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:41:15,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:41:15,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 [2024-10-12 21:41:15,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:41:15,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:41:15,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:41:15,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:41:15,388 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:41:15,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-10-12 21:41:16,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:41:17,142 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:41:17,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-10-12 21:41:17,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d757a1d/838871f8afeb4b0d8612379ffc9d1b4e/FLAGdbe977f55 [2024-10-12 21:41:17,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d757a1d/838871f8afeb4b0d8612379ffc9d1b4e [2024-10-12 21:41:17,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:41:17,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:41:17,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:41:17,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:41:17,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:41:17,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72da6616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17, skipping insertion in model container [2024-10-12 21:41:17,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,250 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:41:17,430 WARN L248 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.07.cil-2.c[913,926] [2024-10-12 21:41:17,480 WARN L248 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.07.cil-2.c[5977,5990] [2024-10-12 21:41:17,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:41:17,579 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:41:17,594 WARN L248 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.07.cil-2.c[913,926] [2024-10-12 21:41:17,614 WARN L248 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.07.cil-2.c[5977,5990] [2024-10-12 21:41:17,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:41:17,689 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:41:17,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17 WrapperNode [2024-10-12 21:41:17,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:41:17,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:41:17,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:41:17,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:41:17,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,749 INFO L138 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 789 [2024-10-12 21:41:17,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:41:17,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:41:17,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:41:17,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:41:17,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,790 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]. [2024-10-12 21:41:17,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:41:17,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:41:17,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:41:17,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:41:17,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (1/1) ... [2024-10-12 21:41:17,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:41:17,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:17,868 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) [2024-10-12 21:41:17,871 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 [2024-10-12 21:41:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:41:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:41:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:41:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-12 21:41:17,950 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-12 21:41:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-12 21:41:17,950 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-12 21:41:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-12 21:41:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-12 21:41:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-12 21:41:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-12 21:41:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-12 21:41:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-12 21:41:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-12 21:41:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-12 21:41:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:41:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-12 21:41:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-12 21:41:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:41:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:41:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-12 21:41:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-12 21:41:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-12 21:41:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-12 21:41:18,126 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:41:18,128 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:41:18,973 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-10-12 21:41:18,973 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:41:19,061 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:41:19,063 INFO L314 CfgBuilder]: Removed 14 assume(true) statements. [2024-10-12 21:41:19,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:41:19 BoogieIcfgContainer [2024-10-12 21:41:19,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:41:19,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:41:19,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:41:19,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:41:19,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:41:17" (1/3) ... [2024-10-12 21:41:19,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa330c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:41:19, skipping insertion in model container [2024-10-12 21:41:19,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:41:17" (2/3) ... [2024-10-12 21:41:19,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa330c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:41:19, skipping insertion in model container [2024-10-12 21:41:19,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:41:19" (3/3) ... [2024-10-12 21:41:19,078 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-10-12 21:41:19,097 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:41:19,098 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:41:19,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:41:19,195 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;@37add56e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:41:19,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:41:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 262 states have (on average 1.7099236641221374) internal successors, (448), 269 states have internal predecessors, (448), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-12 21:41:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 21:41:19,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:19,214 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] [2024-10-12 21:41:19,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:19,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1627235855, now seen corresponding path program 1 times [2024-10-12 21:41:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:19,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113765761] [2024-10-12 21:41:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:19,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:19,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113765761] [2024-10-12 21:41:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113765761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:19,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:19,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:41:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575360953] [2024-10-12 21:41:19,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:19,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:41:19,612 INFO L87 Difference]: Start difference. First operand has 304 states, 262 states have (on average 1.7099236641221374) internal successors, (448), 269 states have internal predecessors, (448), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-12 21:41:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:20,215 INFO L93 Difference]: Finished difference Result 653 states and 1086 transitions. [2024-10-12 21:41:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:41:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 37 [2024-10-12 21:41:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:20,235 INFO L225 Difference]: With dead ends: 653 [2024-10-12 21:41:20,236 INFO L226 Difference]: Without dead ends: 361 [2024-10-12 21:41:20,243 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 [2024-10-12 21:41:20,248 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 614 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:20,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 559 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:41:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-10-12 21:41:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 355. [2024-10-12 21:41:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 309 states have (on average 1.5631067961165048) internal successors, (483), 314 states have internal predecessors, (483), 33 states have call successors, (33), 12 states have call predecessors, (33), 11 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2024-10-12 21:41:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 551 transitions. [2024-10-12 21:41:20,350 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 551 transitions. Word has length 37 [2024-10-12 21:41:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:20,351 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 551 transitions. [2024-10-12 21:41:20,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-12 21:41:20,351 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 551 transitions. [2024-10-12 21:41:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 21:41:20,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:20,355 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] [2024-10-12 21:41:20,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:41:20,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:20,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -910468857, now seen corresponding path program 1 times [2024-10-12 21:41:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:20,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464947983] [2024-10-12 21:41:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 21:41:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:20,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464947983] [2024-10-12 21:41:20,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464947983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:20,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:20,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:41:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199477961] [2024-10-12 21:41:20,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:20,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:41:20,495 INFO L87 Difference]: Start difference. First operand 355 states and 551 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-10-12 21:41:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:20,918 INFO L93 Difference]: Finished difference Result 589 states and 895 transitions. [2024-10-12 21:41:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:41:20,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 38 [2024-10-12 21:41:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:20,925 INFO L225 Difference]: With dead ends: 589 [2024-10-12 21:41:20,925 INFO L226 Difference]: Without dead ends: 478 [2024-10-12 21:41:20,926 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 [2024-10-12 21:41:20,929 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 633 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:20,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 531 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:41:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-10-12 21:41:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 455. [2024-10-12 21:41:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 396 states have (on average 1.5176767676767677) internal successors, (601), 402 states have internal predecessors, (601), 41 states have call successors, (41), 16 states have call predecessors, (41), 16 states have return successors, (49), 37 states have call predecessors, (49), 37 states have call successors, (49) [2024-10-12 21:41:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 691 transitions. [2024-10-12 21:41:20,996 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 691 transitions. Word has length 38 [2024-10-12 21:41:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:20,998 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 691 transitions. [2024-10-12 21:41:20,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-10-12 21:41:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 691 transitions. [2024-10-12 21:41:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 21:41:21,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:21,005 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] [2024-10-12 21:41:21,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:41:21,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:21,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2094613582, now seen corresponding path program 1 times [2024-10-12 21:41:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:21,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432353026] [2024-10-12 21:41:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 21:41:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:21,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432353026] [2024-10-12 21:41:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432353026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:21,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:21,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:41:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220354813] [2024-10-12 21:41:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:21,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:41:21,117 INFO L87 Difference]: Start difference. First operand 455 states and 691 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-12 21:41:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:21,587 INFO L93 Difference]: Finished difference Result 875 states and 1272 transitions. [2024-10-12 21:41:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:41:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 39 [2024-10-12 21:41:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:21,596 INFO L225 Difference]: With dead ends: 875 [2024-10-12 21:41:21,596 INFO L226 Difference]: Without dead ends: 664 [2024-10-12 21:41:21,598 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 [2024-10-12 21:41:21,599 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 261 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:21,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 739 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:41:21,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-10-12 21:41:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 560. [2024-10-12 21:41:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 489 states have (on average 1.492842535787321) internal successors, (730), 497 states have internal predecessors, (730), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (55), 41 states have call predecessors, (55), 43 states have call successors, (55) [2024-10-12 21:41:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 832 transitions. [2024-10-12 21:41:21,639 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 832 transitions. Word has length 39 [2024-10-12 21:41:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:21,639 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 832 transitions. [2024-10-12 21:41:21,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-12 21:41:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 832 transitions. [2024-10-12 21:41:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 21:41:21,642 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:21,643 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] [2024-10-12 21:41:21,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:41:21,643 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:21,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash 529085284, now seen corresponding path program 1 times [2024-10-12 21:41:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:21,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729841282] [2024-10-12 21:41:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:21,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 21:41:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:41:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729841282] [2024-10-12 21:41:21,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729841282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:21,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:21,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:41:21,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253474886] [2024-10-12 21:41:21,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:21,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:21,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:41:21,785 INFO L87 Difference]: Start difference. First operand 560 states and 832 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-12 21:41:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:22,254 INFO L93 Difference]: Finished difference Result 1076 states and 1549 transitions. [2024-10-12 21:41:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:41:22,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 54 [2024-10-12 21:41:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:22,260 INFO L225 Difference]: With dead ends: 1076 [2024-10-12 21:41:22,260 INFO L226 Difference]: Without dead ends: 760 [2024-10-12 21:41:22,263 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 [2024-10-12 21:41:22,264 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 246 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:22,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 788 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:41:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-10-12 21:41:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 726. [2024-10-12 21:41:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 631 states have (on average 1.4358161648177497) internal successors, (906), 641 states have internal predecessors, (906), 61 states have call successors, (61), 30 states have call predecessors, (61), 32 states have return successors, (79), 55 states have call predecessors, (79), 57 states have call successors, (79) [2024-10-12 21:41:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1046 transitions. [2024-10-12 21:41:22,313 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1046 transitions. Word has length 54 [2024-10-12 21:41:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:22,313 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1046 transitions. [2024-10-12 21:41:22,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-12 21:41:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1046 transitions. [2024-10-12 21:41:22,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:41:22,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:22,315 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:41:22,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:41:22,316 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:22,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -510676343, now seen corresponding path program 1 times [2024-10-12 21:41:22,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:22,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554634167] [2024-10-12 21:41:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:41:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 21:41:22,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554634167] [2024-10-12 21:41:22,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554634167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:22,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:22,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:41:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937319374] [2024-10-12 21:41:22,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:22,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:22,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:22,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:41:22,383 INFO L87 Difference]: Start difference. First operand 726 states and 1046 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-12 21:41:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:22,790 INFO L93 Difference]: Finished difference Result 1305 states and 1825 transitions. [2024-10-12 21:41:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:41:22,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 59 [2024-10-12 21:41:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:22,798 INFO L225 Difference]: With dead ends: 1305 [2024-10-12 21:41:22,798 INFO L226 Difference]: Without dead ends: 903 [2024-10-12 21:41:22,800 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 [2024-10-12 21:41:22,801 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 622 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:22,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 543 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:41:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-10-12 21:41:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 854. [2024-10-12 21:41:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 743 states have (on average 1.4010767160161508) internal successors, (1041), 755 states have internal predecessors, (1041), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2024-10-12 21:41:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1203 transitions. [2024-10-12 21:41:22,863 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1203 transitions. Word has length 59 [2024-10-12 21:41:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:22,864 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1203 transitions. [2024-10-12 21:41:22,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-12 21:41:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1203 transitions. [2024-10-12 21:41:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:41:22,866 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:22,867 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] [2024-10-12 21:41:22,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:41:22,867 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:22,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1033637536, now seen corresponding path program 1 times [2024-10-12 21:41:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:22,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716125841] [2024-10-12 21:41:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:41:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 21:41:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716125841] [2024-10-12 21:41:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716125841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654307771] [2024-10-12 21:41:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:22,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:22,976 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) [2024-10-12 21:41:22,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:41:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:23,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 21:41:23,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:41:23,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654307771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:23,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 21:41:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449538472] [2024-10-12 21:41:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:23,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:23,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:23,127 INFO L87 Difference]: Start difference. First operand 854 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-12 21:41:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:23,250 INFO L93 Difference]: Finished difference Result 1335 states and 1864 transitions. [2024-10-12 21:41:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:23,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 60 [2024-10-12 21:41:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:23,255 INFO L225 Difference]: With dead ends: 1335 [2024-10-12 21:41:23,256 INFO L226 Difference]: Without dead ends: 852 [2024-10-12 21:41:23,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:23,260 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 66 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:23,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 879 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:41:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-10-12 21:41:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 814. [2024-10-12 21:41:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 709 states have (on average 1.385049365303244) internal successors, (982), 721 states have internal predecessors, (982), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-10-12 21:41:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1134 transitions. [2024-10-12 21:41:23,305 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1134 transitions. Word has length 60 [2024-10-12 21:41:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:23,306 INFO L471 AbstractCegarLoop]: Abstraction has 814 states and 1134 transitions. [2024-10-12 21:41:23,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-12 21:41:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1134 transitions. [2024-10-12 21:41:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:41:23,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:23,308 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:41:23,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:23,509 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 [2024-10-12 21:41:23,510 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:23,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:23,510 INFO L85 PathProgramCache]: Analyzing trace with hash 36786143, now seen corresponding path program 1 times [2024-10-12 21:41:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322951802] [2024-10-12 21:41:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:23,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:23,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:23,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:23,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:41:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 21:41:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322951802] [2024-10-12 21:41:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322951802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238598315] [2024-10-12 21:41:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:23,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:23,617 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) [2024-10-12 21:41:23,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:41:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:23,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 21:41:23,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:41:23,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:23,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238598315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:23,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:23,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-12 21:41:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815693727] [2024-10-12 21:41:23,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:23,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:23,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:23,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:23,765 INFO L87 Difference]: Start difference. First operand 814 states and 1134 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-12 21:41:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:23,902 INFO L93 Difference]: Finished difference Result 1186 states and 1641 transitions. [2024-10-12 21:41:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:41:23,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-10-12 21:41:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:23,909 INFO L225 Difference]: With dead ends: 1186 [2024-10-12 21:41:23,909 INFO L226 Difference]: Without dead ends: 830 [2024-10-12 21:41:23,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:23,912 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 0 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:23,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1284 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:41:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-10-12 21:41:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2024-10-12 21:41:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 725 states have (on average 1.376551724137931) internal successors, (998), 737 states have internal predecessors, (998), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-10-12 21:41:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1150 transitions. [2024-10-12 21:41:23,960 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1150 transitions. Word has length 60 [2024-10-12 21:41:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:23,960 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1150 transitions. [2024-10-12 21:41:23,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-12 21:41:23,961 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1150 transitions. [2024-10-12 21:41:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:41:23,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:23,963 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:41:23,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:24,163 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 [2024-10-12 21:41:24,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:24,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -221379295, now seen corresponding path program 1 times [2024-10-12 21:41:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956038416] [2024-10-12 21:41:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:41:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 21:41:24,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956038416] [2024-10-12 21:41:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956038416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724969544] [2024-10-12 21:41:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:24,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:24,293 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) [2024-10-12 21:41:24,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:41:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:41:24,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:41:24,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724969544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:24,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:24,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-12 21:41:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169782222] [2024-10-12 21:41:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:24,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:41:24,431 INFO L87 Difference]: Start difference. First operand 830 states and 1150 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:41:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:24,538 INFO L93 Difference]: Finished difference Result 1211 states and 1660 transitions. [2024-10-12 21:41:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:41:24,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 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 60 [2024-10-12 21:41:24,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:24,543 INFO L225 Difference]: With dead ends: 1211 [2024-10-12 21:41:24,543 INFO L226 Difference]: Without dead ends: 731 [2024-10-12 21:41:24,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:41:24,546 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:24,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1282 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:41:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-12 21:41:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 717. [2024-10-12 21:41:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 630 states have (on average 1.3857142857142857) internal successors, (873), 640 states have internal predecessors, (873), 55 states have call successors, (55), 28 states have call predecessors, (55), 30 states have return successors, (68), 49 states have call predecessors, (68), 51 states have call successors, (68) [2024-10-12 21:41:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 996 transitions. [2024-10-12 21:41:24,577 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 996 transitions. Word has length 60 [2024-10-12 21:41:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:24,578 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 996 transitions. [2024-10-12 21:41:24,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:41:24,578 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 996 transitions. [2024-10-12 21:41:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:41:24,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:24,580 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:41:24,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:24,784 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 [2024-10-12 21:41:24,785 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:24,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1576260321, now seen corresponding path program 1 times [2024-10-12 21:41:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625500375] [2024-10-12 21:41:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:41:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 21:41:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625500375] [2024-10-12 21:41:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625500375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:24,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:24,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:41:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944022298] [2024-10-12 21:41:24,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:24,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:41:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:41:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:41:24,904 INFO L87 Difference]: Start difference. First operand 717 states and 996 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 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) [2024-10-12 21:41:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:25,339 INFO L93 Difference]: Finished difference Result 815 states and 1113 transitions. [2024-10-12 21:41:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:41:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 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 60 [2024-10-12 21:41:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:25,344 INFO L225 Difference]: With dead ends: 815 [2024-10-12 21:41:25,344 INFO L226 Difference]: Without dead ends: 812 [2024-10-12 21:41:25,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:41:25,345 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 1027 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:25,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 554 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:41:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-12 21:41:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 716. [2024-10-12 21:41:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 630 states have (on average 1.3825396825396825) internal successors, (871), 639 states have internal predecessors, (871), 54 states have call successors, (54), 28 states have call predecessors, (54), 30 states have return successors, (68), 49 states have call predecessors, (68), 51 states have call successors, (68) [2024-10-12 21:41:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 993 transitions. [2024-10-12 21:41:25,378 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 993 transitions. Word has length 60 [2024-10-12 21:41:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:25,378 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 993 transitions. [2024-10-12 21:41:25,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 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) [2024-10-12 21:41:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 993 transitions. [2024-10-12 21:41:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:41:25,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:25,380 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:41:25,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:41:25,381 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:25,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1618367978, now seen corresponding path program 1 times [2024-10-12 21:41:25,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:25,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821188720] [2024-10-12 21:41:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:25,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:25,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:25,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:25,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:41:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 21:41:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821188720] [2024-10-12 21:41:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821188720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479737320] [2024-10-12 21:41:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:25,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:25,536 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) [2024-10-12 21:41:25,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:41:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:25,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:41:25,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:25,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:41:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 21:41:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479737320] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:41:25,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:41:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-12 21:41:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055340344] [2024-10-12 21:41:25,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:41:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:41:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:41:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:41:25,982 INFO L87 Difference]: Start difference. First operand 716 states and 993 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-12 21:41:26,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:26,855 INFO L93 Difference]: Finished difference Result 1425 states and 1885 transitions. [2024-10-12 21:41:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 21:41:26,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-12 21:41:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:26,863 INFO L225 Difference]: With dead ends: 1425 [2024-10-12 21:41:26,863 INFO L226 Difference]: Without dead ends: 1422 [2024-10-12 21:41:26,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-12 21:41:26,865 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 793 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:26,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1519 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:41:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2024-10-12 21:41:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1009. [2024-10-12 21:41:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 887 states have (on average 1.3494926719278466) internal successors, (1197), 902 states have internal predecessors, (1197), 73 states have call successors, (73), 41 states have call predecessors, (73), 47 states have return successors, (98), 66 states have call predecessors, (98), 70 states have call successors, (98) [2024-10-12 21:41:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1368 transitions. [2024-10-12 21:41:26,940 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1368 transitions. Word has length 61 [2024-10-12 21:41:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:26,940 INFO L471 AbstractCegarLoop]: Abstraction has 1009 states and 1368 transitions. [2024-10-12 21:41:26,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-12 21:41:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1368 transitions. [2024-10-12 21:41:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 21:41:26,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:26,945 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:41:26,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:27,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:27,151 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:27,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -603689555, now seen corresponding path program 2 times [2024-10-12 21:41:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778780175] [2024-10-12 21:41:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-12 21:41:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 21:41:27,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:27,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778780175] [2024-10-12 21:41:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778780175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:41:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61280279] [2024-10-12 21:41:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:27,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:41:27,233 INFO L87 Difference]: Start difference. First operand 1009 states and 1368 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 21:41:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:27,636 INFO L93 Difference]: Finished difference Result 1622 states and 2145 transitions. [2024-10-12 21:41:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:41:27,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2024-10-12 21:41:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:27,642 INFO L225 Difference]: With dead ends: 1622 [2024-10-12 21:41:27,642 INFO L226 Difference]: Without dead ends: 1025 [2024-10-12 21:41:27,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:41:27,645 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 623 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:27,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 561 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:41:27,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-10-12 21:41:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 937. [2024-10-12 21:41:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 822 states have (on average 1.3418491484184916) internal successors, (1103), 837 states have internal predecessors, (1103), 70 states have call successors, (70), 38 states have call predecessors, (70), 43 states have return successors, (93), 62 states have call predecessors, (93), 67 states have call successors, (93) [2024-10-12 21:41:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1266 transitions. [2024-10-12 21:41:27,703 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1266 transitions. Word has length 78 [2024-10-12 21:41:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:27,704 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1266 transitions. [2024-10-12 21:41:27,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 21:41:27,704 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1266 transitions. [2024-10-12 21:41:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:41:27,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:27,706 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:27,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:41:27,707 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:27,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash -71181957, now seen corresponding path program 1 times [2024-10-12 21:41:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:27,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009848588] [2024-10-12 21:41:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:41:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:41:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-12 21:41:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 21:41:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-12 21:41:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 21:41:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009848588] [2024-10-12 21:41:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009848588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557236967] [2024-10-12 21:41:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:27,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:27,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:27,792 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) [2024-10-12 21:41:27,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:41:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:27,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:41:27,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 21:41:27,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:27,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557236967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:27,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:27,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 21:41:27,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120948780] [2024-10-12 21:41:27,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:27,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:27,944 INFO L87 Difference]: Start difference. First operand 937 states and 1266 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, (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) [2024-10-12 21:41:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:28,058 INFO L93 Difference]: Finished difference Result 1218 states and 1617 transitions. [2024-10-12 21:41:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:28,058 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, (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 92 [2024-10-12 21:41:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:28,061 INFO L225 Difference]: With dead ends: 1218 [2024-10-12 21:41:28,061 INFO L226 Difference]: Without dead ends: 239 [2024-10-12 21:41:28,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:28,064 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 54 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:28,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 870 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:41:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-12 21:41:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-10-12 21:41:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 209 states have (on average 1.6172248803827751) internal successors, (338), 211 states have internal predecessors, (338), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-12 21:41:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 382 transitions. [2024-10-12 21:41:28,083 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 382 transitions. Word has length 92 [2024-10-12 21:41:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:28,083 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 382 transitions. [2024-10-12 21:41:28,084 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, (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) [2024-10-12 21:41:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 382 transitions. [2024-10-12 21:41:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:28,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:28,085 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:28,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:28,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 21:41:28,286 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:28,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1460201102, now seen corresponding path program 1 times [2024-10-12 21:41:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937228368] [2024-10-12 21:41:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:28,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:28,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:28,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937228368] [2024-10-12 21:41:28,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937228368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:28,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:28,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:41:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236643625] [2024-10-12 21:41:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:28,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:41:28,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:41:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:41:28,419 INFO L87 Difference]: Start difference. First operand 239 states and 382 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-10-12 21:41:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:29,402 INFO L93 Difference]: Finished difference Result 548 states and 890 transitions. [2024-10-12 21:41:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:41:29,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:29,405 INFO L225 Difference]: With dead ends: 548 [2024-10-12 21:41:29,405 INFO L226 Difference]: Without dead ends: 319 [2024-10-12 21:41:29,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:41:29,407 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 635 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:29,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 446 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:41:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-12 21:41:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 239. [2024-10-12 21:41:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 209 states have (on average 1.61244019138756) internal successors, (337), 211 states have internal predecessors, (337), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-12 21:41:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 381 transitions. [2024-10-12 21:41:29,429 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 381 transitions. Word has length 112 [2024-10-12 21:41:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:29,429 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 381 transitions. [2024-10-12 21:41:29,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-10-12 21:41:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 381 transitions. [2024-10-12 21:41:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:29,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:29,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:29,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:41:29,432 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:29,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1527623796, now seen corresponding path program 1 times [2024-10-12 21:41:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:29,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785585584] [2024-10-12 21:41:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:29,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:29,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:29,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:29,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:29,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:29,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:29,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:29,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785585584] [2024-10-12 21:41:29,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785585584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:29,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:29,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:41:29,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846449950] [2024-10-12 21:41:29,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:29,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:41:29,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:29,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:41:29,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:29,636 INFO L87 Difference]: Start difference. First operand 239 states and 381 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-10-12 21:41:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:31,432 INFO L93 Difference]: Finished difference Result 858 states and 1401 transitions. [2024-10-12 21:41:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:41:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:31,436 INFO L225 Difference]: With dead ends: 858 [2024-10-12 21:41:31,436 INFO L226 Difference]: Without dead ends: 633 [2024-10-12 21:41:31,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:31,438 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 948 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:31,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 750 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:41:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-10-12 21:41:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 472. [2024-10-12 21:41:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 419 states have (on average 1.6229116945107398) internal successors, (680), 422 states have internal predecessors, (680), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2024-10-12 21:41:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 759 transitions. [2024-10-12 21:41:31,472 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 759 transitions. Word has length 112 [2024-10-12 21:41:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:31,472 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 759 transitions. [2024-10-12 21:41:31,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-10-12 21:41:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 759 transitions. [2024-10-12 21:41:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:31,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:31,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:31,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:41:31,474 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:31,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1710612298, now seen corresponding path program 1 times [2024-10-12 21:41:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:31,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638639673] [2024-10-12 21:41:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:31,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:31,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:31,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:31,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:31,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638639673] [2024-10-12 21:41:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638639673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:31,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027414208] [2024-10-12 21:41:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:31,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:31,698 INFO L87 Difference]: Start difference. First operand 472 states and 759 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:33,899 INFO L93 Difference]: Finished difference Result 1413 states and 2307 transitions. [2024-10-12 21:41:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:41:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:33,904 INFO L225 Difference]: With dead ends: 1413 [2024-10-12 21:41:33,904 INFO L226 Difference]: Without dead ends: 955 [2024-10-12 21:41:33,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:41:33,907 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 961 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:33,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1426 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 21:41:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-12 21:41:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 688. [2024-10-12 21:41:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 612 states have (on average 1.6160130718954249) internal successors, (989), 616 states have internal predecessors, (989), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-10-12 21:41:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1102 transitions. [2024-10-12 21:41:33,981 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1102 transitions. Word has length 112 [2024-10-12 21:41:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:33,981 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1102 transitions. [2024-10-12 21:41:33,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1102 transitions. [2024-10-12 21:41:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:33,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:33,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:33,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:41:33,983 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:33,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1232969780, now seen corresponding path program 1 times [2024-10-12 21:41:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:33,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402885463] [2024-10-12 21:41:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:34,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:34,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:34,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:34,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:34,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:34,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402885463] [2024-10-12 21:41:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402885463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:34,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238476416] [2024-10-12 21:41:34,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:34,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:34,184 INFO L87 Difference]: Start difference. First operand 688 states and 1102 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:36,135 INFO L93 Difference]: Finished difference Result 2226 states and 3628 transitions. [2024-10-12 21:41:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:41:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:36,144 INFO L225 Difference]: With dead ends: 2226 [2024-10-12 21:41:36,144 INFO L226 Difference]: Without dead ends: 1552 [2024-10-12 21:41:36,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:41:36,148 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 965 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:36,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1424 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 21:41:36,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2024-10-12 21:41:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1121. [2024-10-12 21:41:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 999 states have (on average 1.6096096096096095) internal successors, (1608), 1005 states have internal predecessors, (1608), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-10-12 21:41:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1793 transitions. [2024-10-12 21:41:36,265 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1793 transitions. Word has length 112 [2024-10-12 21:41:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:36,265 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1793 transitions. [2024-10-12 21:41:36,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1793 transitions. [2024-10-12 21:41:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:36,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:36,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:36,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:41:36,267 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:36,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1443022602, now seen corresponding path program 1 times [2024-10-12 21:41:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:36,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800869209] [2024-10-12 21:41:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:36,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:36,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:36,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:36,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:36,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:36,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:36,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800869209] [2024-10-12 21:41:36,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800869209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:36,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:36,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:36,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134361966] [2024-10-12 21:41:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:36,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:36,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:36,446 INFO L87 Difference]: Start difference. First operand 1121 states and 1793 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:37,567 INFO L93 Difference]: Finished difference Result 2643 states and 4302 transitions. [2024-10-12 21:41:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:41:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:37,578 INFO L225 Difference]: With dead ends: 2643 [2024-10-12 21:41:37,579 INFO L226 Difference]: Without dead ends: 1536 [2024-10-12 21:41:37,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:37,583 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 706 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:37,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 720 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:41:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-10-12 21:41:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1121. [2024-10-12 21:41:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 999 states have (on average 1.6046046046046045) internal successors, (1603), 1005 states have internal predecessors, (1603), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-10-12 21:41:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1788 transitions. [2024-10-12 21:41:37,676 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1788 transitions. Word has length 112 [2024-10-12 21:41:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:37,677 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1788 transitions. [2024-10-12 21:41:37,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1788 transitions. [2024-10-12 21:41:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:37,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:37,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:37,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:41:37,679 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:37,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1414522312, now seen corresponding path program 1 times [2024-10-12 21:41:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607863479] [2024-10-12 21:41:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:37,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:37,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:37,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:37,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:37,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:37,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607863479] [2024-10-12 21:41:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607863479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:37,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:37,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649623285] [2024-10-12 21:41:37,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:37,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:37,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:37,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:37,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:37,859 INFO L87 Difference]: Start difference. First operand 1121 states and 1788 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:38,911 INFO L93 Difference]: Finished difference Result 2637 states and 4275 transitions. [2024-10-12 21:41:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:41:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:38,920 INFO L225 Difference]: With dead ends: 2637 [2024-10-12 21:41:38,920 INFO L226 Difference]: Without dead ends: 1530 [2024-10-12 21:41:38,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:38,925 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 704 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:38,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 720 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:41:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2024-10-12 21:41:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1121. [2024-10-12 21:41:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 999 states have (on average 1.5995995995995995) internal successors, (1598), 1005 states have internal predecessors, (1598), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-10-12 21:41:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1783 transitions. [2024-10-12 21:41:39,046 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1783 transitions. Word has length 112 [2024-10-12 21:41:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:39,046 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1783 transitions. [2024-10-12 21:41:39,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:39,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1783 transitions. [2024-10-12 21:41:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:39,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:39,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:39,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 21:41:39,049 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:39,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash -526059702, now seen corresponding path program 1 times [2024-10-12 21:41:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:39,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388461081] [2024-10-12 21:41:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:39,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:39,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:39,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:39,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:39,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:39,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388461081] [2024-10-12 21:41:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388461081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:39,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:39,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:39,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768383428] [2024-10-12 21:41:39,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:39,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:39,271 INFO L87 Difference]: Start difference. First operand 1121 states and 1783 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:41,332 INFO L93 Difference]: Finished difference Result 3772 states and 6079 transitions. [2024-10-12 21:41:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:41:41,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:41,345 INFO L225 Difference]: With dead ends: 3772 [2024-10-12 21:41:41,345 INFO L226 Difference]: Without dead ends: 2665 [2024-10-12 21:41:41,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:41:41,350 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 947 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:41,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1424 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:41:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2024-10-12 21:41:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2003. [2024-10-12 21:41:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1789 states have (on average 1.593068753493572) internal successors, (2850), 1799 states have internal predecessors, (2850), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2024-10-12 21:41:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3185 transitions. [2024-10-12 21:41:41,537 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3185 transitions. Word has length 112 [2024-10-12 21:41:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:41,537 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 3185 transitions. [2024-10-12 21:41:41,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3185 transitions. [2024-10-12 21:41:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:41,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:41,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:41,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 21:41:41,540 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:41,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1351003528, now seen corresponding path program 1 times [2024-10-12 21:41:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123946965] [2024-10-12 21:41:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:41,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:41,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:41,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:41,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:41,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123946965] [2024-10-12 21:41:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123946965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:41,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:41,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204950140] [2024-10-12 21:41:41,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:41,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:41,698 INFO L87 Difference]: Start difference. First operand 2003 states and 3185 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:42,931 INFO L93 Difference]: Finished difference Result 4657 states and 7514 transitions. [2024-10-12 21:41:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:41:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:42,944 INFO L225 Difference]: With dead ends: 4657 [2024-10-12 21:41:42,945 INFO L226 Difference]: Without dead ends: 2668 [2024-10-12 21:41:42,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:42,952 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 703 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:42,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 720 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:41:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2024-10-12 21:41:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2003. [2024-10-12 21:41:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1789 states have (on average 1.5880380100614868) internal successors, (2841), 1799 states have internal predecessors, (2841), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2024-10-12 21:41:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3176 transitions. [2024-10-12 21:41:43,203 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3176 transitions. Word has length 112 [2024-10-12 21:41:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:43,204 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 3176 transitions. [2024-10-12 21:41:43,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3176 transitions. [2024-10-12 21:41:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:43,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:43,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:43,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 21:41:43,207 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:43,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash 580269962, now seen corresponding path program 1 times [2024-10-12 21:41:43,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:43,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921703572] [2024-10-12 21:41:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:43,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:43,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921703572] [2024-10-12 21:41:43,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921703572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:43,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:43,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:43,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861956787] [2024-10-12 21:41:43,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:43,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:43,390 INFO L87 Difference]: Start difference. First operand 2003 states and 3176 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:45,549 INFO L93 Difference]: Finished difference Result 7626 states and 12229 transitions. [2024-10-12 21:41:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:41:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:45,578 INFO L225 Difference]: With dead ends: 7626 [2024-10-12 21:41:45,578 INFO L226 Difference]: Without dead ends: 5637 [2024-10-12 21:41:45,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:41:45,591 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 1263 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:45,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 928 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 21:41:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2024-10-12 21:41:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 3761. [2024-10-12 21:41:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3371 states have (on average 1.5832097300504302) internal successors, (5337), 3389 states have internal predecessors, (5337), 271 states have call successors, (271), 103 states have call predecessors, (271), 118 states have return successors, (366), 284 states have call predecessors, (366), 269 states have call successors, (366) [2024-10-12 21:41:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 5974 transitions. [2024-10-12 21:41:45,920 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 5974 transitions. Word has length 112 [2024-10-12 21:41:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:45,921 INFO L471 AbstractCegarLoop]: Abstraction has 3761 states and 5974 transitions. [2024-10-12 21:41:45,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 5974 transitions. [2024-10-12 21:41:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:45,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:45,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:45,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:41:45,925 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:45,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -414423736, now seen corresponding path program 1 times [2024-10-12 21:41:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:45,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845179647] [2024-10-12 21:41:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:45,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:46,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:46,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:46,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:46,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:46,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:46,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845179647] [2024-10-12 21:41:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845179647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:46,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:46,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673364958] [2024-10-12 21:41:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:46,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:46,105 INFO L87 Difference]: Start difference. First operand 3761 states and 5974 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:48,850 INFO L93 Difference]: Finished difference Result 14390 states and 23121 transitions. [2024-10-12 21:41:48,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:41:48,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:48,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:48,889 INFO L225 Difference]: With dead ends: 14390 [2024-10-12 21:41:48,890 INFO L226 Difference]: Without dead ends: 10643 [2024-10-12 21:41:48,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:41:48,903 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 993 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:48,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1413 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 21:41:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10643 states. [2024-10-12 21:41:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10643 to 7114. [2024-10-12 21:41:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7114 states, 6380 states have (on average 1.5753918495297805) internal successors, (10051), 6414 states have internal predecessors, (10051), 503 states have call successors, (503), 199 states have call predecessors, (503), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2024-10-12 21:41:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 11330 transitions. [2024-10-12 21:41:49,505 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 11330 transitions. Word has length 112 [2024-10-12 21:41:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:49,505 INFO L471 AbstractCegarLoop]: Abstraction has 7114 states and 11330 transitions. [2024-10-12 21:41:49,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 11330 transitions. [2024-10-12 21:41:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:49,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:49,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:49,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:41:49,512 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:49,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1000699958, now seen corresponding path program 1 times [2024-10-12 21:41:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55384096] [2024-10-12 21:41:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:49,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:49,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:49,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:49,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:49,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:49,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:49,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55384096] [2024-10-12 21:41:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55384096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:49,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800140013] [2024-10-12 21:41:49,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:49,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:49,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:49,676 INFO L87 Difference]: Start difference. First operand 7114 states and 11330 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:51,204 INFO L93 Difference]: Finished difference Result 16321 states and 26383 transitions. [2024-10-12 21:41:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:41:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:51,243 INFO L225 Difference]: With dead ends: 16321 [2024-10-12 21:41:51,244 INFO L226 Difference]: Without dead ends: 9221 [2024-10-12 21:41:51,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:51,267 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 805 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:51,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 602 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:41:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9221 states. [2024-10-12 21:41:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9221 to 7114. [2024-10-12 21:41:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7114 states, 6380 states have (on average 1.5702194357366772) internal successors, (10018), 6414 states have internal predecessors, (10018), 503 states have call successors, (503), 199 states have call predecessors, (503), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2024-10-12 21:41:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 11297 transitions. [2024-10-12 21:41:51,879 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 11297 transitions. Word has length 112 [2024-10-12 21:41:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:51,880 INFO L471 AbstractCegarLoop]: Abstraction has 7114 states and 11297 transitions. [2024-10-12 21:41:51,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 11297 transitions. [2024-10-12 21:41:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:51,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:51,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:51,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 21:41:51,887 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:51,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1335692552, now seen corresponding path program 1 times [2024-10-12 21:41:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009627989] [2024-10-12 21:41:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:51,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:52,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:52,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:52,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:52,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:52,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:52,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009627989] [2024-10-12 21:41:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009627989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:52,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:52,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248108483] [2024-10-12 21:41:52,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:52,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:52,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:52,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:52,086 INFO L87 Difference]: Start difference. First operand 7114 states and 11297 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:55,504 INFO L93 Difference]: Finished difference Result 26377 states and 42387 transitions. [2024-10-12 21:41:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:41:55,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:55,571 INFO L225 Difference]: With dead ends: 26377 [2024-10-12 21:41:55,571 INFO L226 Difference]: Without dead ends: 19277 [2024-10-12 21:41:55,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:41:55,601 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 1051 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:55,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1417 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 21:41:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19277 states. [2024-10-12 21:41:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19277 to 14045. [2024-10-12 21:41:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 12639 states have (on average 1.5691114803386343) internal successors, (19832), 12705 states have internal predecessors, (19832), 951 states have call successors, (951), 391 states have call predecessors, (951), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2024-10-12 21:41:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 22525 transitions. [2024-10-12 21:41:56,722 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 22525 transitions. Word has length 112 [2024-10-12 21:41:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:56,723 INFO L471 AbstractCegarLoop]: Abstraction has 14045 states and 22525 transitions. [2024-10-12 21:41:56,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 22525 transitions. [2024-10-12 21:41:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:41:56,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:56,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:56,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 21:41:56,734 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:56,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:56,734 INFO L85 PathProgramCache]: Analyzing trace with hash -543438394, now seen corresponding path program 1 times [2024-10-12 21:41:56,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:56,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115024669] [2024-10-12 21:41:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:56,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:56,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:56,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:41:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:56,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:41:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:56,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:56,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:41:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:41:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115024669] [2024-10-12 21:41:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115024669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:56,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700320585] [2024-10-12 21:41:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:56,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:56,878 INFO L87 Difference]: Start difference. First operand 14045 states and 22525 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:41:59,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:59,479 INFO L93 Difference]: Finished difference Result 31841 states and 51838 transitions. [2024-10-12 21:41:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:41:59,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:41:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:59,552 INFO L225 Difference]: With dead ends: 31841 [2024-10-12 21:41:59,552 INFO L226 Difference]: Without dead ends: 17810 [2024-10-12 21:41:59,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:59,586 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 802 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:59,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 602 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:41:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2024-10-12 21:42:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 14045. [2024-10-12 21:42:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 12639 states have (on average 1.5639686684073106) internal successors, (19767), 12705 states have internal predecessors, (19767), 951 states have call successors, (951), 391 states have call predecessors, (951), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2024-10-12 21:42:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 22460 transitions. [2024-10-12 21:42:00,944 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 22460 transitions. Word has length 112 [2024-10-12 21:42:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:42:00,945 INFO L471 AbstractCegarLoop]: Abstraction has 14045 states and 22460 transitions. [2024-10-12 21:42:00,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:42:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 22460 transitions. [2024-10-12 21:42:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:42:00,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:42:00,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:42:00,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 21:42:00,956 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:42:00,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:42:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash 781417800, now seen corresponding path program 1 times [2024-10-12 21:42:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:42:00,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145079940] [2024-10-12 21:42:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:42:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:42:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:01,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:42:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:01,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:42:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:01,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:42:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:01,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:42:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:01,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:42:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:42:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:42:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145079940] [2024-10-12 21:42:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145079940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:42:01,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:42:01,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:42:01,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562741833] [2024-10-12 21:42:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:42:01,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:42:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:42:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:42:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:42:01,111 INFO L87 Difference]: Start difference. First operand 14045 states and 22460 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:42:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:42:06,051 INFO L93 Difference]: Finished difference Result 50392 states and 81525 transitions. [2024-10-12 21:42:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:42:06,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:42:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:42:06,194 INFO L225 Difference]: With dead ends: 50392 [2024-10-12 21:42:06,194 INFO L226 Difference]: Without dead ends: 36361 [2024-10-12 21:42:06,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:42:06,235 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 935 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:42:06,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1417 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:42:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36361 states. [2024-10-12 21:42:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36361 to 27967. [2024-10-12 21:42:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27967 states, 25249 states have (on average 1.562477721889976) internal successors, (39451), 25379 states have internal predecessors, (39451), 1815 states have call successors, (1815), 775 states have call predecessors, (1815), 902 states have return successors, (4128), 1940 states have call predecessors, (4128), 1813 states have call successors, (4128) [2024-10-12 21:42:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27967 states to 27967 states and 45394 transitions. [2024-10-12 21:42:08,812 INFO L78 Accepts]: Start accepts. Automaton has 27967 states and 45394 transitions. Word has length 112 [2024-10-12 21:42:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:42:08,813 INFO L471 AbstractCegarLoop]: Abstraction has 27967 states and 45394 transitions. [2024-10-12 21:42:08,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:42:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27967 states and 45394 transitions. [2024-10-12 21:42:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:42:08,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:42:08,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:42:08,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 21:42:08,839 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:42:08,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:42:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1946791546, now seen corresponding path program 1 times [2024-10-12 21:42:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:42:08,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901174455] [2024-10-12 21:42:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:42:08,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:42:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:08,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:42:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:08,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:42:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:09,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:42:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:09,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:42:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:09,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:42:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:42:09,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:42:09,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901174455] [2024-10-12 21:42:09,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901174455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:42:09,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:42:09,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:42:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302585526] [2024-10-12 21:42:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:42:09,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:42:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:42:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:42:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:42:09,044 INFO L87 Difference]: Start difference. First operand 27967 states and 45394 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:42:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:42:17,056 INFO L93 Difference]: Finished difference Result 98360 states and 161757 transitions. [2024-10-12 21:42:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:42:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2024-10-12 21:42:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:42:17,298 INFO L225 Difference]: With dead ends: 98360 [2024-10-12 21:42:17,298 INFO L226 Difference]: Without dead ends: 70407 [2024-10-12 21:42:17,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:42:17,384 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 934 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:42:17,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1417 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 21:42:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70407 states. [2024-10-12 21:42:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70407 to 55808. [2024-10-12 21:42:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55808 states, 50530 states have (on average 1.562260043538492) internal successors, (78941), 50788 states have internal predecessors, (78941), 3479 states have call successors, (3479), 1543 states have call predecessors, (3479), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2024-10-12 21:42:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55808 states to 55808 states and 92714 transitions. [2024-10-12 21:42:22,555 INFO L78 Accepts]: Start accepts. Automaton has 55808 states and 92714 transitions. Word has length 112 [2024-10-12 21:42:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:42:22,555 INFO L471 AbstractCegarLoop]: Abstraction has 55808 states and 92714 transitions. [2024-10-12 21:42:22,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-12 21:42:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 55808 states and 92714 transitions. [2024-10-12 21:42:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:42:22,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:42:22,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:42:22,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:42:22,589 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:42:22,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:42:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1290337672, now seen corresponding path program 1 times [2024-10-12 21:42:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:42:22,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404579767] [2024-10-12 21:42:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:42:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:42:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:22,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:42:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:22,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:42:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:22,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:42:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:22,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:42:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:22,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:42:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:42:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:42:22,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:42:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404579767] [2024-10-12 21:42:22,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404579767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:42:22,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:42:22,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:42:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602790358] [2024-10-12 21:42:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:42:22,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:42:22,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:42:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:42:22,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:42:22,713 INFO L87 Difference]: Start difference. First operand 55808 states and 92714 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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)