./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.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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.09.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 43061c6fd2cf55dd1721985927e668f0444e5f80f3517bfb8a4405f126e779da --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 00:06:17,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 00:06:17,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 00:06:17,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 00:06:17,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 00:06:17,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 00:06:17,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 00:06:17,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 00:06:17,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 00:06:17,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 00:06:17,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 00:06:17,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 00:06:17,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 00:06:17,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 00:06:17,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 00:06:17,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 00:06:17,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 00:06:17,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 00:06:17,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 00:06:17,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 00:06:17,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 00:06:17,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 00:06:17,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 00:06:17,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 00:06:17,151 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 00:06:17,151 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 00:06:17,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 00:06:17,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 00:06:17,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 00:06:17,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 00:06:17,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 00:06:17,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 00:06:17,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:06:17,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 00:06:17,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 00:06:17,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 00:06:17,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 00:06:17,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 00:06:17,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 00:06:17,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 00:06:17,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 00:06:17,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 00:06:17,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43061c6fd2cf55dd1721985927e668f0444e5f80f3517bfb8a4405f126e779da [2024-11-20 00:06:17,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 00:06:17,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 00:06:17,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 00:06:17,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 00:06:17,434 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 00:06:17,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c [2024-11-20 00:06:18,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 00:06:18,827 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 00:06:18,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c [2024-11-20 00:06:18,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19ea589a/d101d358e36a4b5ba7d42ca9b6c7090a/FLAG18c214789 [2024-11-20 00:06:19,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19ea589a/d101d358e36a4b5ba7d42ca9b6c7090a [2024-11-20 00:06:19,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 00:06:19,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 00:06:19,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 00:06:19,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 00:06:19,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 00:06:19,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614276a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19, skipping insertion in model container [2024-11-20 00:06:19,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 00:06:19,390 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c[913,926] [2024-11-20 00:06:19,436 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c[5977,5990] [2024-11-20 00:06:19,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:06:19,502 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 00:06:19,512 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c[913,926] [2024-11-20 00:06:19,530 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c[5977,5990] [2024-11-20 00:06:19,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:06:19,602 INFO L204 MainTranslator]: Completed translation [2024-11-20 00:06:19,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19 WrapperNode [2024-11-20 00:06:19,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 00:06:19,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 00:06:19,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 00:06:19,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 00:06:19,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,669 INFO L138 Inliner]: procedures = 66, calls = 76, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 909 [2024-11-20 00:06:19,669 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 00:06:19,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 00:06:19,670 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 00:06:19,670 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 00:06:19,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,716 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 00:06:19,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 00:06:19,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 00:06:19,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 00:06:19,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 00:06:19,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (1/1) ... [2024-11-20 00:06:19,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:06:19,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:19,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 00:06:19,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 00:06:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 00:06:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-20 00:06:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-20 00:06:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-20 00:06:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-20 00:06:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-20 00:06:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-20 00:06:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-20 00:06:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-20 00:06:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-20 00:06:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-20 00:06:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-20 00:06:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-20 00:06:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-20 00:06:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-20 00:06:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 00:06:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-20 00:06:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-20 00:06:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 00:06:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 00:06:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-20 00:06:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-20 00:06:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-20 00:06:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-20 00:06:19,985 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 00:06:19,987 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 00:06:20,683 INFO L? ?]: Removed 113 outVars from TransFormulas that were not future-live. [2024-11-20 00:06:20,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 00:06:20,709 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 00:06:20,710 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-20 00:06:20,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:20 BoogieIcfgContainer [2024-11-20 00:06:20,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 00:06:20,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 00:06:20,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 00:06:20,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 00:06:20,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:06:19" (1/3) ... [2024-11-20 00:06:20,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27602241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:20, skipping insertion in model container [2024-11-20 00:06:20,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:19" (2/3) ... [2024-11-20 00:06:20,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27602241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:20, skipping insertion in model container [2024-11-20 00:06:20,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:20" (3/3) ... [2024-11-20 00:06:20,722 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.09.cil-2.c [2024-11-20 00:06:20,752 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 00:06:20,752 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 00:06:20,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 00:06:20,831 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;@791c1e33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 00:06:20,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 00:06:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 397 states, 353 states have (on average 1.6232294617563738) internal successors, (573), 360 states have internal predecessors, (573), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-20 00:06:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 00:06:20,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:20,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:20,851 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:20,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 492351257, now seen corresponding path program 1 times [2024-11-20 00:06:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:20,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207472211] [2024-11-20 00:06:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-20 00:06:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:21,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207472211] [2024-11-20 00:06:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207472211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:21,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:21,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:21,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040758340] [2024-11-20 00:06:21,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:21,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:21,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:21,174 INFO L87 Difference]: Start difference. First operand has 397 states, 353 states have (on average 1.6232294617563738) internal successors, (573), 360 states have internal predecessors, (573), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:21,664 INFO L93 Difference]: Finished difference Result 841 states and 1344 transitions. [2024-11-20 00:06:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-20 00:06:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:21,682 INFO L225 Difference]: With dead ends: 841 [2024-11-20 00:06:21,683 INFO L226 Difference]: Without dead ends: 456 [2024-11-20 00:06:21,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:21,693 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 786 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:21,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 766 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:06:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-20 00:06:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 450. [2024-11-20 00:06:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 402 states have (on average 1.507462686567164) internal successors, (606), 407 states have internal predecessors, (606), 35 states have call successors, (35), 12 states have call predecessors, (35), 11 states have return successors, (37), 31 states have call predecessors, (37), 31 states have call successors, (37) [2024-11-20 00:06:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 678 transitions. [2024-11-20 00:06:21,766 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 678 transitions. Word has length 44 [2024-11-20 00:06:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:21,768 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 678 transitions. [2024-11-20 00:06:21,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:21,768 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 678 transitions. [2024-11-20 00:06:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 00:06:21,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:21,772 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:21,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 00:06:21,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:21,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1310916311, now seen corresponding path program 1 times [2024-11-20 00:06:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:21,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114086597] [2024-11-20 00:06:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:21,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 00:06:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:21,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114086597] [2024-11-20 00:06:21,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114086597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:21,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:21,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484635570] [2024-11-20 00:06:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:21,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:21,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:21,888 INFO L87 Difference]: Start difference. First operand 450 states and 678 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:22,276 INFO L93 Difference]: Finished difference Result 698 states and 1018 transitions. [2024-11-20 00:06:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-20 00:06:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:22,279 INFO L225 Difference]: With dead ends: 698 [2024-11-20 00:06:22,279 INFO L226 Difference]: Without dead ends: 574 [2024-11-20 00:06:22,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:22,281 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 310 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:22,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1055 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:06:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-20 00:06:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 517. [2024-11-20 00:06:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 463 states have (on average 1.490280777537797) internal successors, (690), 468 states have internal predecessors, (690), 38 states have call successors, (38), 15 states have call predecessors, (38), 14 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-20 00:06:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 768 transitions. [2024-11-20 00:06:22,320 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 768 transitions. Word has length 45 [2024-11-20 00:06:22,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:22,320 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 768 transitions. [2024-11-20 00:06:22,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 768 transitions. [2024-11-20 00:06:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 00:06:22,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:22,324 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:22,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 00:06:22,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:22,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1699693524, now seen corresponding path program 1 times [2024-11-20 00:06:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631391497] [2024-11-20 00:06:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:22,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 00:06:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:22,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:22,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631391497] [2024-11-20 00:06:22,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631391497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:22,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:22,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573995499] [2024-11-20 00:06:22,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:22,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:22,389 INFO L87 Difference]: Start difference. First operand 517 states and 768 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:22,761 INFO L93 Difference]: Finished difference Result 925 states and 1327 transitions. [2024-11-20 00:06:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-20 00:06:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:22,765 INFO L225 Difference]: With dead ends: 925 [2024-11-20 00:06:22,765 INFO L226 Difference]: Without dead ends: 734 [2024-11-20 00:06:22,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:22,766 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 796 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:22,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 763 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:06:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-20 00:06:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 682. [2024-11-20 00:06:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 609 states have (on average 1.444991789819376) internal successors, (880), 617 states have internal predecessors, (880), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (57), 43 states have call predecessors, (57), 45 states have call successors, (57) [2024-11-20 00:06:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 986 transitions. [2024-11-20 00:06:22,808 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 986 transitions. Word has length 45 [2024-11-20 00:06:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:22,808 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 986 transitions. [2024-11-20 00:06:22,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 986 transitions. [2024-11-20 00:06:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 00:06:22,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:22,811 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:22,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 00:06:22,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:22,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1801249655, now seen corresponding path program 1 times [2024-11-20 00:06:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:22,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427347178] [2024-11-20 00:06:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:06:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 00:06:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 00:06:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:22,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427347178] [2024-11-20 00:06:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427347178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:22,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742615057] [2024-11-20 00:06:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:22,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:22,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:22,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:22,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:22,906 INFO L87 Difference]: Start difference. First operand 682 states and 986 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:23,292 INFO L93 Difference]: Finished difference Result 1266 states and 1771 transitions. [2024-11-20 00:06:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:23,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-20 00:06:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:23,297 INFO L225 Difference]: With dead ends: 1266 [2024-11-20 00:06:23,297 INFO L226 Difference]: Without dead ends: 910 [2024-11-20 00:06:23,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:23,299 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 294 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:23,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1108 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:06:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-11-20 00:06:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 872. [2024-11-20 00:06:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 775 states have (on average 1.3935483870967742) internal successors, (1080), 785 states have internal predecessors, (1080), 63 states have call successors, (63), 30 states have call predecessors, (63), 32 states have return successors, (81), 57 states have call predecessors, (81), 59 states have call successors, (81) [2024-11-20 00:06:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1224 transitions. [2024-11-20 00:06:23,328 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1224 transitions. Word has length 62 [2024-11-20 00:06:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:23,329 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1224 transitions. [2024-11-20 00:06:23,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1224 transitions. [2024-11-20 00:06:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-20 00:06:23,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:23,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:23,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 00:06:23,331 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:23,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1372884258, now seen corresponding path program 1 times [2024-11-20 00:06:23,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:23,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452973419] [2024-11-20 00:06:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-20 00:06:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-20 00:06:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 00:06:23,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:23,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452973419] [2024-11-20 00:06:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452973419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:23,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:23,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732476014] [2024-11-20 00:06:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:23,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:23,381 INFO L87 Difference]: Start difference. First operand 872 states and 1224 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:23,778 INFO L93 Difference]: Finished difference Result 1525 states and 2077 transitions. [2024-11-20 00:06:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-20 00:06:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:23,788 INFO L225 Difference]: With dead ends: 1525 [2024-11-20 00:06:23,789 INFO L226 Difference]: Without dead ends: 1071 [2024-11-20 00:06:23,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:23,791 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 783 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:23,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 762 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:06:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-20 00:06:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1016. [2024-11-20 00:06:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 903 states have (on average 1.363233665559247) internal successors, (1231), 915 states have internal predecessors, (1231), 71 states have call successors, (71), 36 states have call predecessors, (71), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2024-11-20 00:06:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1397 transitions. [2024-11-20 00:06:23,838 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1397 transitions. Word has length 67 [2024-11-20 00:06:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:23,838 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1397 transitions. [2024-11-20 00:06:23,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1397 transitions. [2024-11-20 00:06:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 00:06:23,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:23,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:23,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 00:06:23,842 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:23,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1498194643, now seen corresponding path program 1 times [2024-11-20 00:06:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749132567] [2024-11-20 00:06:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 00:06:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749132567] [2024-11-20 00:06:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749132567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198444042] [2024-11-20 00:06:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:23,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:23,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:23,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 00:06:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:24,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 00:06:24,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 00:06:24,067 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:24,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198444042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:24,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-20 00:06:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644954862] [2024-11-20 00:06:24,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:24,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:06:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:06:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:24,069 INFO L87 Difference]: Start difference. First operand 1016 states and 1397 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:24,114 INFO L93 Difference]: Finished difference Result 1559 states and 2120 transitions. [2024-11-20 00:06:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:06:24,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-20 00:06:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:24,121 INFO L225 Difference]: With dead ends: 1559 [2024-11-20 00:06:24,122 INFO L226 Difference]: Without dead ends: 1014 [2024-11-20 00:06:24,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:24,124 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 72 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:24,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1195 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-20 00:06:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 970. [2024-11-20 00:06:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 863 states have (on average 1.3511008111239862) internal successors, (1166), 875 states have internal predecessors, (1166), 67 states have call successors, (67), 34 states have call predecessors, (67), 38 states have return successors, (89), 61 states have call predecessors, (89), 63 states have call successors, (89) [2024-11-20 00:06:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1322 transitions. [2024-11-20 00:06:24,163 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1322 transitions. Word has length 68 [2024-11-20 00:06:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:24,164 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1322 transitions. [2024-11-20 00:06:24,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1322 transitions. [2024-11-20 00:06:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 00:06:24,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:24,179 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:24,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 00:06:24,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 00:06:24,381 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:24,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash 681777132, now seen corresponding path program 1 times [2024-11-20 00:06:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162308842] [2024-11-20 00:06:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:24,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:24,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:24,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:24,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 00:06:24,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:24,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162308842] [2024-11-20 00:06:24,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162308842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:24,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353320781] [2024-11-20 00:06:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:24,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:24,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:24,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:24,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 00:06:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:24,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 00:06:24,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:24,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:06:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 00:06:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353320781] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:24,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:06:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-20 00:06:24,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634662473] [2024-11-20 00:06:24,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:24,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:06:24,672 INFO L87 Difference]: Start difference. First operand 970 states and 1322 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:24,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:24,800 INFO L93 Difference]: Finished difference Result 1022 states and 1384 transitions. [2024-11-20 00:06:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 00:06:24,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-20 00:06:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:24,805 INFO L225 Difference]: With dead ends: 1022 [2024-11-20 00:06:24,805 INFO L226 Difference]: Without dead ends: 1019 [2024-11-20 00:06:24,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:06:24,806 INFO L432 NwaCegarLoop]: 608 mSDtfsCounter, 1061 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:24,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 673 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 00:06:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-11-20 00:06:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 969. [2024-11-20 00:06:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 863 states have (on average 1.3487833140208574) internal successors, (1164), 874 states have internal predecessors, (1164), 66 states have call successors, (66), 34 states have call predecessors, (66), 38 states have return successors, (89), 61 states have call predecessors, (89), 63 states have call successors, (89) [2024-11-20 00:06:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1319 transitions. [2024-11-20 00:06:24,838 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1319 transitions. Word has length 68 [2024-11-20 00:06:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:24,838 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1319 transitions. [2024-11-20 00:06:24,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1319 transitions. [2024-11-20 00:06:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-20 00:06:24,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:24,840 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:24,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 00:06:25,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-20 00:06:25,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:25,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash -340955775, now seen corresponding path program 1 times [2024-11-20 00:06:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798469009] [2024-11-20 00:06:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 00:06:25,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798469009] [2024-11-20 00:06:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798469009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109989432] [2024-11-20 00:06:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:25,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:25,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:25,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 00:06:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 00:06:25,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:25,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:06:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 00:06:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109989432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:06:25,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:06:25,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-20 00:06:25,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573771570] [2024-11-20 00:06:25,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:06:25,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 00:06:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 00:06:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:06:25,519 INFO L87 Difference]: Start difference. First operand 969 states and 1319 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-20 00:06:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:26,633 INFO L93 Difference]: Finished difference Result 2286 states and 3025 transitions. [2024-11-20 00:06:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 00:06:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-20 00:06:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:26,639 INFO L225 Difference]: With dead ends: 2286 [2024-11-20 00:06:26,639 INFO L226 Difference]: Without dead ends: 1790 [2024-11-20 00:06:26,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-20 00:06:26,641 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 953 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:26,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 3381 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2024-11-20 00:06:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1322. [2024-11-20 00:06:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1177 states have (on average 1.3101104502973662) internal successors, (1542), 1196 states have internal predecessors, (1542), 86 states have call successors, (86), 48 states have call predecessors, (86), 57 states have return successors, (123), 78 states have call predecessors, (123), 83 states have call successors, (123) [2024-11-20 00:06:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1751 transitions. [2024-11-20 00:06:26,685 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1751 transitions. Word has length 69 [2024-11-20 00:06:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:26,685 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1751 transitions. [2024-11-20 00:06:26,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-20 00:06:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1751 transitions. [2024-11-20 00:06:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-20 00:06:26,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:26,688 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:26,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 00:06:26,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:26,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:26,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash -734762725, now seen corresponding path program 1 times [2024-11-20 00:06:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500509595] [2024-11-20 00:06:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 00:06:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 00:06:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-20 00:06:26,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500509595] [2024-11-20 00:06:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500509595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73598658] [2024-11-20 00:06:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:26,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:26,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:26,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:26,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 00:06:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 00:06:27,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 00:06:27,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:27,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73598658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:27,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:27,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-20 00:06:27,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349117902] [2024-11-20 00:06:27,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:27,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:06:27,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:06:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:27,079 INFO L87 Difference]: Start difference. First operand 1322 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 00:06:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:27,120 INFO L93 Difference]: Finished difference Result 1987 states and 2592 transitions. [2024-11-20 00:06:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:06:27,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-20 00:06:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:27,125 INFO L225 Difference]: With dead ends: 1987 [2024-11-20 00:06:27,125 INFO L226 Difference]: Without dead ends: 1244 [2024-11-20 00:06:27,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:27,127 INFO L432 NwaCegarLoop]: 615 mSDtfsCounter, 545 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:27,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 688 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2024-11-20 00:06:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1235. [2024-11-20 00:06:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1100 states have (on average 1.3072727272727274) internal successors, (1438), 1118 states have internal predecessors, (1438), 82 states have call successors, (82), 44 states have call predecessors, (82), 51 states have return successors, (115), 73 states have call predecessors, (115), 79 states have call successors, (115) [2024-11-20 00:06:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1635 transitions. [2024-11-20 00:06:27,190 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1635 transitions. Word has length 88 [2024-11-20 00:06:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:27,190 INFO L471 AbstractCegarLoop]: Abstraction has 1235 states and 1635 transitions. [2024-11-20 00:06:27,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 00:06:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1635 transitions. [2024-11-20 00:06:27,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 00:06:27,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:27,193 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:27,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 00:06:27,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:27,394 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:27,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1460677985, now seen corresponding path program 1 times [2024-11-20 00:06:27,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:27,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525572696] [2024-11-20 00:06:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-20 00:06:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-20 00:06:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-20 00:06:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:06:27,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:27,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525572696] [2024-11-20 00:06:27,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525572696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:27,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998696971] [2024-11-20 00:06:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:27,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:27,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:27,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:27,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 00:06:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:06:27,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 00:06:27,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998696971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:27,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:27,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-20 00:06:27,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823405277] [2024-11-20 00:06:27,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:27,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:06:27,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:06:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:27,620 INFO L87 Difference]: Start difference. First operand 1235 states and 1635 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:06:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:27,653 INFO L93 Difference]: Finished difference Result 1612 states and 2096 transitions. [2024-11-20 00:06:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:06:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-20 00:06:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:27,655 INFO L225 Difference]: With dead ends: 1612 [2024-11-20 00:06:27,656 INFO L226 Difference]: Without dead ends: 320 [2024-11-20 00:06:27,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:27,657 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 61 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:27,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:27,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-20 00:06:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-20 00:06:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 288 states have (on average 1.5520833333333333) internal successors, (447), 290 states have internal predecessors, (447), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-20 00:06:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 495 transitions. [2024-11-20 00:06:27,666 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 495 transitions. Word has length 103 [2024-11-20 00:06:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:27,667 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 495 transitions. [2024-11-20 00:06:27,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:06:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 495 transitions. [2024-11-20 00:06:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:27,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:27,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:27,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 00:06:27,872 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,SelfDestructingSolverStorable9 [2024-11-20 00:06:27,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:27,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1516933778, now seen corresponding path program 1 times [2024-11-20 00:06:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330658344] [2024-11-20 00:06:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330658344] [2024-11-20 00:06:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330658344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:27,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 00:06:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905234626] [2024-11-20 00:06:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:27,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 00:06:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 00:06:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:27,986 INFO L87 Difference]: Start difference. First operand 320 states and 495 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:28,990 INFO L93 Difference]: Finished difference Result 738 states and 1161 transitions. [2024-11-20 00:06:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:06:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:28,994 INFO L225 Difference]: With dead ends: 738 [2024-11-20 00:06:28,994 INFO L226 Difference]: Without dead ends: 429 [2024-11-20 00:06:28,995 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 [2024-11-20 00:06:28,995 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 829 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:28,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 651 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-20 00:06:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 320. [2024-11-20 00:06:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 288 states have (on average 1.5486111111111112) internal successors, (446), 290 states have internal predecessors, (446), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-20 00:06:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 494 transitions. [2024-11-20 00:06:29,013 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 494 transitions. Word has length 146 [2024-11-20 00:06:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:29,013 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 494 transitions. [2024-11-20 00:06:29,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 494 transitions. [2024-11-20 00:06:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:29,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:29,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:29,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 00:06:29,015 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:29,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 100506672, now seen corresponding path program 1 times [2024-11-20 00:06:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:29,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262993008] [2024-11-20 00:06:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:29,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262993008] [2024-11-20 00:06:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262993008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:29,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:06:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320582258] [2024-11-20 00:06:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:29,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:06:29,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:06:29,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:06:29,180 INFO L87 Difference]: Start difference. First operand 320 states and 494 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:30,883 INFO L93 Difference]: Finished difference Result 1154 states and 1825 transitions. [2024-11-20 00:06:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:06:30,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:30,888 INFO L225 Difference]: With dead ends: 1154 [2024-11-20 00:06:30,888 INFO L226 Difference]: Without dead ends: 852 [2024-11-20 00:06:30,889 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 [2024-11-20 00:06:30,890 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 1248 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:30,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1111 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:06:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-20 00:06:30,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 633. [2024-11-20 00:06:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 576 states have (on average 1.5607638888888888) internal successors, (899), 579 states have internal predecessors, (899), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2024-11-20 00:06:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 986 transitions. [2024-11-20 00:06:30,922 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 986 transitions. Word has length 146 [2024-11-20 00:06:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:30,922 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 986 transitions. [2024-11-20 00:06:30,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 986 transitions. [2024-11-20 00:06:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:30,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:30,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:30,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 00:06:30,924 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:30,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1700958932, now seen corresponding path program 1 times [2024-11-20 00:06:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:30,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248008262] [2024-11-20 00:06:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:31,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:31,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248008262] [2024-11-20 00:06:31,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248008262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:31,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:31,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739583832] [2024-11-20 00:06:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:31,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:31,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:31,168 INFO L87 Difference]: Start difference. First operand 633 states and 986 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:33,185 INFO L93 Difference]: Finished difference Result 1902 states and 3012 transitions. [2024-11-20 00:06:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:33,190 INFO L225 Difference]: With dead ends: 1902 [2024-11-20 00:06:33,190 INFO L226 Difference]: Without dead ends: 1287 [2024-11-20 00:06:33,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:33,193 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 1346 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:33,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 1448 Invalid, 2594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 00:06:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-11-20 00:06:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 925. [2024-11-20 00:06:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 843 states have (on average 1.5539739027283512) internal successors, (1310), 847 states have internal predecessors, (1310), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2024-11-20 00:06:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1435 transitions. [2024-11-20 00:06:33,250 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1435 transitions. Word has length 146 [2024-11-20 00:06:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:33,250 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1435 transitions. [2024-11-20 00:06:33,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1435 transitions. [2024-11-20 00:06:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:33,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:33,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:33,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 00:06:33,252 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:33,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1887411758, now seen corresponding path program 1 times [2024-11-20 00:06:33,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655391685] [2024-11-20 00:06:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:33,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:33,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:33,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:33,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:33,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:33,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:33,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:33,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655391685] [2024-11-20 00:06:33,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655391685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:33,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:33,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68340764] [2024-11-20 00:06:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:33,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:33,429 INFO L87 Difference]: Start difference. First operand 925 states and 1435 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:35,475 INFO L93 Difference]: Finished difference Result 3005 states and 4749 transitions. [2024-11-20 00:06:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:35,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:35,483 INFO L225 Difference]: With dead ends: 3005 [2024-11-20 00:06:35,483 INFO L226 Difference]: Without dead ends: 2098 [2024-11-20 00:06:35,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:35,486 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 1273 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:35,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 2149 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 00:06:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2024-11-20 00:06:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1510. [2024-11-20 00:06:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1378 states have (on average 1.5478955007256894) internal successors, (2133), 1384 states have internal predecessors, (2133), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2024-11-20 00:06:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2338 transitions. [2024-11-20 00:06:35,557 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2338 transitions. Word has length 146 [2024-11-20 00:06:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:35,557 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 2338 transitions. [2024-11-20 00:06:35,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2338 transitions. [2024-11-20 00:06:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:35,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:35,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:35,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 00:06:35,559 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:35,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:35,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1460517652, now seen corresponding path program 1 times [2024-11-20 00:06:35,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:35,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34937837] [2024-11-20 00:06:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:35,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:35,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34937837] [2024-11-20 00:06:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34937837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:35,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372737028] [2024-11-20 00:06:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:35,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:35,784 INFO L87 Difference]: Start difference. First operand 1510 states and 2338 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:38,099 INFO L93 Difference]: Finished difference Result 5130 states and 8076 transitions. [2024-11-20 00:06:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:38,111 INFO L225 Difference]: With dead ends: 5130 [2024-11-20 00:06:38,111 INFO L226 Difference]: Without dead ends: 3638 [2024-11-20 00:06:38,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:38,114 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 1265 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:38,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 2149 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-20 00:06:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2024-11-20 00:06:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 2681. [2024-11-20 00:06:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2449 states have (on average 1.5430788076766027) internal successors, (3779), 2459 states have internal predecessors, (3779), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2024-11-20 00:06:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 4150 transitions. [2024-11-20 00:06:38,235 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 4150 transitions. Word has length 146 [2024-11-20 00:06:38,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:38,236 INFO L471 AbstractCegarLoop]: Abstraction has 2681 states and 4150 transitions. [2024-11-20 00:06:38,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 4150 transitions. [2024-11-20 00:06:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:38,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:38,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:38,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 00:06:38,238 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:38,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash -598684050, now seen corresponding path program 1 times [2024-11-20 00:06:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:38,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948111867] [2024-11-20 00:06:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:38,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:38,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:38,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:38,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:38,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948111867] [2024-11-20 00:06:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948111867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:38,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:38,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649557412] [2024-11-20 00:06:38,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:38,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:38,416 INFO L87 Difference]: Start difference. First operand 2681 states and 4150 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:40,698 INFO L93 Difference]: Finished difference Result 9379 states and 14746 transitions. [2024-11-20 00:06:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:40,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:40,719 INFO L225 Difference]: With dead ends: 9379 [2024-11-20 00:06:40,719 INFO L226 Difference]: Without dead ends: 6716 [2024-11-20 00:06:40,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:40,725 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 1261 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 2777 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:40,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2149 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2777 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-20 00:06:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2024-11-20 00:06:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 5028. [2024-11-20 00:06:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 4596 states have (on average 1.5398172323759791) internal successors, (7077), 4614 states have internal predecessors, (7077), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2024-11-20 00:06:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7798 transitions. [2024-11-20 00:06:40,951 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7798 transitions. Word has length 146 [2024-11-20 00:06:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:40,952 INFO L471 AbstractCegarLoop]: Abstraction has 5028 states and 7798 transitions. [2024-11-20 00:06:40,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7798 transitions. [2024-11-20 00:06:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:40,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:40,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:40,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 00:06:40,955 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:40,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1645874348, now seen corresponding path program 1 times [2024-11-20 00:06:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503613496] [2024-11-20 00:06:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:41,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:41,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:41,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:41,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:41,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503613496] [2024-11-20 00:06:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503613496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:41,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:41,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:41,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249819280] [2024-11-20 00:06:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:41,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:41,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:41,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:41,127 INFO L87 Difference]: Start difference. First operand 5028 states and 7798 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:42,311 INFO L93 Difference]: Finished difference Result 11802 states and 18615 transitions. [2024-11-20 00:06:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:06:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:42,330 INFO L225 Difference]: With dead ends: 11802 [2024-11-20 00:06:42,330 INFO L226 Difference]: Without dead ends: 6792 [2024-11-20 00:06:42,341 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 [2024-11-20 00:06:42,341 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 1061 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:42,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 904 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:42,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6792 states. [2024-11-20 00:06:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6792 to 5028. [2024-11-20 00:06:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 4596 states have (on average 1.536118363794604) internal successors, (7060), 4614 states have internal predecessors, (7060), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2024-11-20 00:06:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7781 transitions. [2024-11-20 00:06:42,673 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7781 transitions. Word has length 146 [2024-11-20 00:06:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:42,674 INFO L471 AbstractCegarLoop]: Abstraction has 5028 states and 7781 transitions. [2024-11-20 00:06:42,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7781 transitions. [2024-11-20 00:06:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:42,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:42,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:42,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 00:06:42,680 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:42,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2133921454, now seen corresponding path program 1 times [2024-11-20 00:06:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194524387] [2024-11-20 00:06:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:42,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:42,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:42,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:42,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:42,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:42,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194524387] [2024-11-20 00:06:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194524387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335704350] [2024-11-20 00:06:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:42,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:42,828 INFO L87 Difference]: Start difference. First operand 5028 states and 7781 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:44,107 INFO L93 Difference]: Finished difference Result 11767 states and 18495 transitions. [2024-11-20 00:06:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:06:44,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:44,123 INFO L225 Difference]: With dead ends: 11767 [2024-11-20 00:06:44,124 INFO L226 Difference]: Without dead ends: 6757 [2024-11-20 00:06:44,131 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 [2024-11-20 00:06:44,131 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 925 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:44,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1079 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2024-11-20 00:06:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 5028. [2024-11-20 00:06:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 4596 states have (on average 1.5324194952132288) internal successors, (7043), 4614 states have internal predecessors, (7043), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2024-11-20 00:06:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7764 transitions. [2024-11-20 00:06:44,372 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7764 transitions. Word has length 146 [2024-11-20 00:06:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:44,372 INFO L471 AbstractCegarLoop]: Abstraction has 5028 states and 7764 transitions. [2024-11-20 00:06:44,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7764 transitions. [2024-11-20 00:06:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:44,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:44,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:44,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 00:06:44,376 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:44,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash 851749168, now seen corresponding path program 1 times [2024-11-20 00:06:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:44,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464741119] [2024-11-20 00:06:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:44,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:44,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:44,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:44,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:44,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:44,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464741119] [2024-11-20 00:06:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464741119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:44,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:44,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:44,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640890657] [2024-11-20 00:06:44,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:44,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:44,601 INFO L87 Difference]: Start difference. First operand 5028 states and 7764 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:47,175 INFO L93 Difference]: Finished difference Result 17823 states and 27874 transitions. [2024-11-20 00:06:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:47,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:47,208 INFO L225 Difference]: With dead ends: 17823 [2024-11-20 00:06:47,208 INFO L226 Difference]: Without dead ends: 12813 [2024-11-20 00:06:47,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:47,220 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 1248 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:47,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 2149 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-20 00:06:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2024-11-20 00:06:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 9785. [2024-11-20 00:06:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9785 states, 8953 states have (on average 1.5295431698871886) internal successors, (13694), 8987 states have internal predecessors, (13694), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2024-11-20 00:06:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9785 states to 9785 states and 15169 transitions. [2024-11-20 00:06:47,755 INFO L78 Accepts]: Start accepts. Automaton has 9785 states and 15169 transitions. Word has length 146 [2024-11-20 00:06:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:47,756 INFO L471 AbstractCegarLoop]: Abstraction has 9785 states and 15169 transitions. [2024-11-20 00:06:47,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9785 states and 15169 transitions. [2024-11-20 00:06:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:47,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:47,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:47,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 00:06:47,761 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:47,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash -990726546, now seen corresponding path program 1 times [2024-11-20 00:06:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676296194] [2024-11-20 00:06:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:47,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:47,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:47,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:47,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:47,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:47,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:47,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:47,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676296194] [2024-11-20 00:06:47,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676296194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:47,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:47,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100588681] [2024-11-20 00:06:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:47,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:47,903 INFO L87 Difference]: Start difference. First operand 9785 states and 15169 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:49,622 INFO L93 Difference]: Finished difference Result 22717 states and 35760 transitions. [2024-11-20 00:06:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:06:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:49,661 INFO L225 Difference]: With dead ends: 22717 [2024-11-20 00:06:49,662 INFO L226 Difference]: Without dead ends: 12950 [2024-11-20 00:06:49,680 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 [2024-11-20 00:06:49,680 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 966 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:49,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1078 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2024-11-20 00:06:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 9785. [2024-11-20 00:06:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9785 states, 8953 states have (on average 1.525857254551547) internal successors, (13661), 8987 states have internal predecessors, (13661), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2024-11-20 00:06:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9785 states to 9785 states and 15136 transitions. [2024-11-20 00:06:50,210 INFO L78 Accepts]: Start accepts. Automaton has 9785 states and 15136 transitions. Word has length 146 [2024-11-20 00:06:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:50,210 INFO L471 AbstractCegarLoop]: Abstraction has 9785 states and 15136 transitions. [2024-11-20 00:06:50,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9785 states and 15136 transitions. [2024-11-20 00:06:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:50,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:50,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:50,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 00:06:50,216 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:50,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1582238064, now seen corresponding path program 1 times [2024-11-20 00:06:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:50,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143038781] [2024-11-20 00:06:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:50,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:50,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:50,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:50,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:50,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143038781] [2024-11-20 00:06:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143038781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:50,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:50,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130070363] [2024-11-20 00:06:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:50,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:50,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:50,364 INFO L87 Difference]: Start difference. First operand 9785 states and 15136 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:54,017 INFO L93 Difference]: Finished difference Result 39106 states and 61041 transitions. [2024-11-20 00:06:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:06:54,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:06:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:54,099 INFO L225 Difference]: With dead ends: 39106 [2024-11-20 00:06:54,099 INFO L226 Difference]: Without dead ends: 29339 [2024-11-20 00:06:54,126 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 [2024-11-20 00:06:54,129 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 1609 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:54,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 2139 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-20 00:06:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29339 states. [2024-11-20 00:06:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29339 to 19261. [2024-11-20 00:06:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19261 states, 17661 states have (on average 1.525111828322292) internal successors, (26935), 17727 states have internal predecessors, (26935), 1145 states have call successors, (1145), 391 states have call predecessors, (1145), 454 states have return successors, (1936), 1206 states have call predecessors, (1936), 1143 states have call successors, (1936) [2024-11-20 00:06:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19261 states to 19261 states and 30016 transitions. [2024-11-20 00:06:55,221 INFO L78 Accepts]: Start accepts. Automaton has 19261 states and 30016 transitions. Word has length 146 [2024-11-20 00:06:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:55,221 INFO L471 AbstractCegarLoop]: Abstraction has 19261 states and 30016 transitions. [2024-11-20 00:06:55,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 19261 states and 30016 transitions. [2024-11-20 00:06:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:06:55,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:55,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:55,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 00:06:55,231 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:55,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1249594926, now seen corresponding path program 1 times [2024-11-20 00:06:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004860025] [2024-11-20 00:06:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:55,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:55,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:06:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:55,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:06:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:55,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:06:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:55,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:06:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004860025] [2024-11-20 00:06:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004860025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451613640] [2024-11-20 00:06:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:55,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:55,385 INFO L87 Difference]: Start difference. First operand 19261 states and 30016 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:07:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:07:00,790 INFO L93 Difference]: Finished difference Result 76360 states and 120043 transitions. [2024-11-20 00:07:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:07:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:07:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:07:00,932 INFO L225 Difference]: With dead ends: 76360 [2024-11-20 00:07:00,932 INFO L226 Difference]: Without dead ends: 57117 [2024-11-20 00:07:00,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:07:00,976 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 1321 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 3190 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:07:00,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 2135 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3190 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-20 00:07:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57117 states. [2024-11-20 00:07:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57117 to 37538. [2024-11-20 00:07:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37538 states, 34434 states have (on average 1.5205029912295986) internal successors, (52357), 34564 states have internal predecessors, (52357), 2201 states have call successors, (2201), 775 states have call predecessors, (2201), 902 states have return successors, (4514), 2326 states have call predecessors, (4514), 2199 states have call successors, (4514) [2024-11-20 00:07:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37538 states to 37538 states and 59072 transitions. [2024-11-20 00:07:03,365 INFO L78 Accepts]: Start accepts. Automaton has 37538 states and 59072 transitions. Word has length 146 [2024-11-20 00:07:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:07:03,365 INFO L471 AbstractCegarLoop]: Abstraction has 37538 states and 59072 transitions. [2024-11-20 00:07:03,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:07:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37538 states and 59072 transitions. [2024-11-20 00:07:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:07:03,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:07:03,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:07:03,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 00:07:03,382 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:07:03,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:07:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1116440144, now seen corresponding path program 1 times [2024-11-20 00:07:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:07:03,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830198703] [2024-11-20 00:07:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:07:03,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:07:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:03,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:07:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:03,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:07:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:03,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:07:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:03,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:07:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:03,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:07:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:07:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:07:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830198703] [2024-11-20 00:07:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830198703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:07:03,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:07:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:07:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627379087] [2024-11-20 00:07:03,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:07:03,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:07:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:07:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:07:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:07:03,525 INFO L87 Difference]: Start difference. First operand 37538 states and 59072 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:07:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:07:11,856 INFO L93 Difference]: Finished difference Result 147763 states and 234581 transitions. [2024-11-20 00:07:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:07:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:07:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:07:12,343 INFO L225 Difference]: With dead ends: 147763 [2024-11-20 00:07:12,344 INFO L226 Difference]: Without dead ends: 110243 [2024-11-20 00:07:12,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:07:12,422 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 1529 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:07:12,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2139 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-20 00:07:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110243 states. [2024-11-20 00:07:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110243 to 74667. [2024-11-20 00:07:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74667 states, 68619 states have (on average 1.5216630962269926) internal successors, (104415), 68877 states have internal predecessors, (104415), 4249 states have call successors, (4249), 1543 states have call predecessors, (4249), 1798 states have return successors, (11064), 4502 states have call predecessors, (11064), 4247 states have call successors, (11064) [2024-11-20 00:07:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74667 states to 74667 states and 119728 transitions. [2024-11-20 00:07:17,691 INFO L78 Accepts]: Start accepts. Automaton has 74667 states and 119728 transitions. Word has length 146 [2024-11-20 00:07:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:07:17,691 INFO L471 AbstractCegarLoop]: Abstraction has 74667 states and 119728 transitions. [2024-11-20 00:07:17,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:07:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 74667 states and 119728 transitions. [2024-11-20 00:07:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-20 00:07:17,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:07:17,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:07:17,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 00:07:17,719 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:07:17,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:07:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 885446126, now seen corresponding path program 1 times [2024-11-20 00:07:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:07:17,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683176958] [2024-11-20 00:07:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:07:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:07:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:17,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:07:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:17,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 00:07:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:17,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-20 00:07:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:17,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-20 00:07:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:17,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-20 00:07:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:07:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:07:17,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683176958] [2024-11-20 00:07:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683176958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:07:17,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:07:17,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:07:17,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849070132] [2024-11-20 00:07:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:07:17,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:07:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:07:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:07:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:07:17,873 INFO L87 Difference]: Start difference. First operand 74667 states and 119728 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:07:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:07:31,909 INFO L93 Difference]: Finished difference Result 289994 states and 469043 transitions. [2024-11-20 00:07:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:07:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2024-11-20 00:07:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:07:32,557 INFO L225 Difference]: With dead ends: 289994 [2024-11-20 00:07:32,557 INFO L226 Difference]: Without dead ends: 215345 [2024-11-20 00:07:32,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:07:32,920 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 1306 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:07:32,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 2139 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3058 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]