./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:03:23,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:03:23,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:03:23,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:03:23,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:03:23,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:03:23,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:03:23,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:03:23,820 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:03:23,821 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:03:23,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:03:23,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:03:23,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:03:23,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:03:23,822 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:03:23,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:03:23,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:03:23,823 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:03:23,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:03:23,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:03:23,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:03:23,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:03:23,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:03:23,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:03:23,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:03:23,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:03:23,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:03:23,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:03:23,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:03:23,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:03:23,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:03:23,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:03:23,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:03:23,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:03:23,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:03:23,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:03:23,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:03:23,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:03:23,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:03:23,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:03:23,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:03:23,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:03:23,835 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 [2024-11-22 04:03:24,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:03:24,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:03:24,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:03:24,098 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:03:24,099 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:03:24,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-22 04:03:25,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:03:25,711 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:03:25,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-22 04:03:25,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0840b033/e448105d74a943f298f9b4a73b52b1a4/FLAGf6b437218 [2024-11-22 04:03:25,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0840b033/e448105d74a943f298f9b4a73b52b1a4 [2024-11-22 04:03:25,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:03:25,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:03:25,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:03:25,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:03:25,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:03:25,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:25" (1/1) ... [2024-11-22 04:03:25,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85bbe11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:25, skipping insertion in model container [2024-11-22 04:03:25,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:25" (1/1) ... [2024-11-22 04:03:25,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:03:25,955 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.07.cil-2.c[913,926] [2024-11-22 04:03:25,998 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.07.cil-2.c[5977,5990] [2024-11-22 04:03:26,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:03:26,066 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:03:26,076 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.07.cil-2.c[913,926] [2024-11-22 04:03:26,086 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.07.cil-2.c[5977,5990] [2024-11-22 04:03:26,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:03:26,147 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:03:26,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26 WrapperNode [2024-11-22 04:03:26,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:03:26,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:03:26,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:03:26,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:03:26,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,213 INFO L138 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 789 [2024-11-22 04:03:26,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:03:26,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:03:26,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:03:26,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:03:26,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,274 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]. [2024-11-22 04:03:26,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:03:26,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:03:26,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:03:26,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:03:26,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (1/1) ... [2024-11-22 04:03:26,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:03:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:26,340 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) [2024-11-22 04:03:26,342 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 [2024-11-22 04:03:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:03:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:03:26,379 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:03:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-22 04:03:26,379 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-22 04:03:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:03:26,379 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:03:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:03:26,379 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:03:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:03:26,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:03:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:03:26,380 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:03:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:03:26,380 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:03:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:03:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:03:26,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:03:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:03:26,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:03:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:03:26,381 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:03:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:03:26,381 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:03:26,462 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:03:26,465 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:03:27,338 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-22 04:03:27,339 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:03:27,359 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:03:27,359 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-22 04:03:27,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:27 BoogieIcfgContainer [2024-11-22 04:03:27,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:03:27,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:03:27,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:03:27,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:03:27,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:03:25" (1/3) ... [2024-11-22 04:03:27,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360a7957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:27, skipping insertion in model container [2024-11-22 04:03:27,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26" (2/3) ... [2024-11-22 04:03:27,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360a7957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:27, skipping insertion in model container [2024-11-22 04:03:27,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:27" (3/3) ... [2024-11-22 04:03:27,366 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-22 04:03:27,380 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:03:27,380 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:03:27,456 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:03:27,462 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;@133d02e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:03:27,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:03:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 303 states have (on average 1.613861386138614) internal successors, (489), 310 states have internal predecessors, (489), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 04:03:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 04:03:27,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:27,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:27,486 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:27,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 269349357, now seen corresponding path program 1 times [2024-11-22 04:03:27,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:27,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212253230] [2024-11-22 04:03:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:27,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:27,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212253230] [2024-11-22 04:03:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212253230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:27,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:27,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215068342] [2024-11-22 04:03:27,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:27,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:27,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:27,800 INFO L87 Difference]: Start difference. First operand has 345 states, 303 states have (on average 1.613861386138614) internal successors, (489), 310 states have internal predecessors, (489), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:27,947 INFO L93 Difference]: Finished difference Result 728 states and 1156 transitions. [2024-11-22 04:03:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 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 44 [2024-11-22 04:03:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:27,962 INFO L225 Difference]: With dead ends: 728 [2024-11-22 04:03:27,962 INFO L226 Difference]: Without dead ends: 393 [2024-11-22 04:03:27,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:27,970 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 490 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:27,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 624 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-22 04:03:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2024-11-22 04:03:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 344 states have (on average 1.497093023255814) internal successors, (515), 348 states have internal predecessors, (515), 33 states have call successors, (33), 12 states have call predecessors, (33), 10 states have return successors, (33), 29 states have call predecessors, (33), 29 states have call successors, (33) [2024-11-22 04:03:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 581 transitions. [2024-11-22 04:03:28,033 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 581 transitions. Word has length 44 [2024-11-22 04:03:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:28,034 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 581 transitions. [2024-11-22 04:03:28,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 581 transitions. [2024-11-22 04:03:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 04:03:28,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:28,037 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] [2024-11-22 04:03:28,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:03:28,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:28,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash -461325641, now seen corresponding path program 1 times [2024-11-22 04:03:28,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:28,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095044709] [2024-11-22 04:03:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:28,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:28,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095044709] [2024-11-22 04:03:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095044709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:28,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:28,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625651329] [2024-11-22 04:03:28,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:28,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:28,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,136 INFO L87 Difference]: Start difference. First operand 389 states and 581 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:28,198 INFO L93 Difference]: Finished difference Result 597 states and 869 transitions. [2024-11-22 04:03:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 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 [2024-11-22 04:03:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:28,210 INFO L225 Difference]: With dead ends: 597 [2024-11-22 04:03:28,211 INFO L226 Difference]: Without dead ends: 482 [2024-11-22 04:03:28,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,215 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 67 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:28,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1007 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-22 04:03:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 456. [2024-11-22 04:03:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 405 states have (on average 1.4790123456790123) internal successors, (599), 409 states have internal predecessors, (599), 36 states have call successors, (36), 15 states have call predecessors, (36), 13 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-11-22 04:03:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 672 transitions. [2024-11-22 04:03:28,264 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 672 transitions. Word has length 45 [2024-11-22 04:03:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:28,265 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 672 transitions. [2024-11-22 04:03:28,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 672 transitions. [2024-11-22 04:03:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 04:03:28,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:28,268 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] [2024-11-22 04:03:28,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:03:28,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:28,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1745683102, now seen corresponding path program 1 times [2024-11-22 04:03:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:28,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116716649] [2024-11-22 04:03:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116716649] [2024-11-22 04:03:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116716649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:28,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:28,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:28,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117281956] [2024-11-22 04:03:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:28,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:28,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,383 INFO L87 Difference]: Start difference. First operand 456 states and 672 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:28,416 INFO L93 Difference]: Finished difference Result 809 states and 1160 transitions. [2024-11-22 04:03:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:28,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 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 [2024-11-22 04:03:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:28,420 INFO L225 Difference]: With dead ends: 809 [2024-11-22 04:03:28,421 INFO L226 Difference]: Without dead ends: 627 [2024-11-22 04:03:28,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,423 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 478 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:28,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 590 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-22 04:03:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2024-11-22 04:03:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 544 states have (on average 1.4356617647058822) internal successors, (781), 550 states have internal predecessors, (781), 47 states have call successors, (47), 22 states have call predecessors, (47), 20 states have return successors, (53), 41 states have call predecessors, (53), 43 states have call successors, (53) [2024-11-22 04:03:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 881 transitions. [2024-11-22 04:03:28,452 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 881 transitions. Word has length 45 [2024-11-22 04:03:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:28,452 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 881 transitions. [2024-11-22 04:03:28,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 881 transitions. [2024-11-22 04:03:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 04:03:28,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:28,458 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] [2024-11-22 04:03:28,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:03:28,458 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:28,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 201479069, now seen corresponding path program 1 times [2024-11-22 04:03:28,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:28,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540810416] [2024-11-22 04:03:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:28,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 04:03:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540810416] [2024-11-22 04:03:28,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540810416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:28,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589599967] [2024-11-22 04:03:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:28,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:28,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,564 INFO L87 Difference]: Start difference. First operand 613 states and 881 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 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) [2024-11-22 04:03:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:28,624 INFO L93 Difference]: Finished difference Result 1125 states and 1578 transitions. [2024-11-22 04:03:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 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 62 [2024-11-22 04:03:28,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:28,631 INFO L225 Difference]: With dead ends: 1125 [2024-11-22 04:03:28,631 INFO L226 Difference]: Without dead ends: 786 [2024-11-22 04:03:28,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,636 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 55 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:28,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1054 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2024-11-22 04:03:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2024-11-22 04:03:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 695 states have (on average 1.3841726618705037) internal successors, (962), 701 states have internal predecessors, (962), 61 states have call successors, (61), 30 states have call predecessors, (61), 28 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2024-11-22 04:03:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1098 transitions. [2024-11-22 04:03:28,723 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1098 transitions. Word has length 62 [2024-11-22 04:03:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:28,726 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1098 transitions. [2024-11-22 04:03:28,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 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) [2024-11-22 04:03:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1098 transitions. [2024-11-22 04:03:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:03:28,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:28,733 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] [2024-11-22 04:03:28,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:03:28,733 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:28,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1220888774, now seen corresponding path program 1 times [2024-11-22 04:03:28,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:28,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93695129] [2024-11-22 04:03:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:28,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 04:03:28,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:28,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93695129] [2024-11-22 04:03:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93695129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:28,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:28,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:28,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716867742] [2024-11-22 04:03:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:28,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,828 INFO L87 Difference]: Start difference. First operand 786 states and 1098 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 04:03:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:28,906 INFO L93 Difference]: Finished difference Result 1333 states and 1819 transitions. [2024-11-22 04:03:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:28,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 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 [2024-11-22 04:03:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:28,913 INFO L225 Difference]: With dead ends: 1333 [2024-11-22 04:03:28,913 INFO L226 Difference]: Without dead ends: 913 [2024-11-22 04:03:28,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:28,916 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 465 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:28,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-11-22 04:03:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2024-11-22 04:03:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 808 states have (on average 1.353960396039604) internal successors, (1094), 814 states have internal predecessors, (1094), 69 states have call successors, (69), 36 states have call predecessors, (69), 34 states have return successors, (87), 63 states have call predecessors, (87), 65 states have call successors, (87) [2024-11-22 04:03:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1250 transitions. [2024-11-22 04:03:28,961 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1250 transitions. Word has length 67 [2024-11-22 04:03:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:28,961 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1250 transitions. [2024-11-22 04:03:28,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 04:03:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1250 transitions. [2024-11-22 04:03:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:03:28,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:28,964 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] [2024-11-22 04:03:28,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:03:28,965 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:28,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 890321295, now seen corresponding path program 1 times [2024-11-22 04:03:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61186041] [2024-11-22 04:03:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 04:03:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61186041] [2024-11-22 04:03:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61186041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004912076] [2024-11-22 04:03:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:29,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:29,055 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) [2024-11-22 04:03:29,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 04:03:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:29,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 04:03:29,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 04:03:29,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:03:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004912076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:03:29,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 04:03:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738050957] [2024-11-22 04:03:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:29,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:29,207 INFO L87 Difference]: Start difference. First operand 913 states and 1250 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) [2024-11-22 04:03:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:29,275 INFO L93 Difference]: Finished difference Result 1405 states and 1906 transitions. [2024-11-22 04:03:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:29,276 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 [2024-11-22 04:03:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:29,281 INFO L225 Difference]: With dead ends: 1405 [2024-11-22 04:03:29,281 INFO L226 Difference]: Without dead ends: 911 [2024-11-22 04:03:29,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:29,285 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 72 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1027 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 [2024-11-22 04:03:29,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1027 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-22 04:03:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 867. [2024-11-22 04:03:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 768 states have (on average 1.33984375) internal successors, (1029), 774 states have internal predecessors, (1029), 65 states have call successors, (65), 34 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2024-11-22 04:03:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1175 transitions. [2024-11-22 04:03:29,342 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1175 transitions. Word has length 68 [2024-11-22 04:03:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:29,344 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1175 transitions. [2024-11-22 04:03:29,344 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) [2024-11-22 04:03:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1175 transitions. [2024-11-22 04:03:29,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:03:29,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:29,347 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] [2024-11-22 04:03:29,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 04:03:29,547 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 [2024-11-22 04:03:29,550 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:29,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1224674226, now seen corresponding path program 1 times [2024-11-22 04:03:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:29,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041479616] [2024-11-22 04:03:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:29,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 04:03:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:29,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041479616] [2024-11-22 04:03:29,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041479616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446036475] [2024-11-22 04:03:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:29,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:29,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:29,733 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) [2024-11-22 04:03:29,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 04:03:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:29,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 04:03:29,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 04:03:29,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:03:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446036475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:29,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:03:29,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-22 04:03:29,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771228796] [2024-11-22 04:03:29,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:29,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 04:03:29,888 INFO L87 Difference]: Start difference. First operand 867 states and 1175 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 04:03:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:29,946 INFO L93 Difference]: Finished difference Result 1259 states and 1690 transitions. [2024-11-22 04:03:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:03:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2024-11-22 04:03:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:29,952 INFO L225 Difference]: With dead ends: 1259 [2024-11-22 04:03:29,952 INFO L226 Difference]: Without dead ends: 891 [2024-11-22 04:03:29,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 04:03:29,955 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 0 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:29,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1996 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-22 04:03:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 885. [2024-11-22 04:03:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 786 states have (on average 1.33206106870229) internal successors, (1047), 792 states have internal predecessors, (1047), 65 states have call successors, (65), 34 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2024-11-22 04:03:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1193 transitions. [2024-11-22 04:03:29,996 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1193 transitions. Word has length 68 [2024-11-22 04:03:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:29,997 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1193 transitions. [2024-11-22 04:03:29,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 04:03:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1193 transitions. [2024-11-22 04:03:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:03:29,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:29,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:30,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 04:03:30,199 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 [2024-11-22 04:03:30,200 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:30,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -637868212, now seen corresponding path program 1 times [2024-11-22 04:03:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218385825] [2024-11-22 04:03:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 04:03:30,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:30,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218385825] [2024-11-22 04:03:30,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218385825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:30,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171414896] [2024-11-22 04:03:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:30,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:30,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:30,335 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) [2024-11-22 04:03:30,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 04:03:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:30,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 04:03:30,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:30,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:03:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 04:03:30,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171414896] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:30,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 04:03:30,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-22 04:03:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238316015] [2024-11-22 04:03:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:30,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:03:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:03:30,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:03:30,608 INFO L87 Difference]: Start difference. First operand 885 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-22 04:03:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:30,977 INFO L93 Difference]: Finished difference Result 937 states and 1255 transitions. [2024-11-22 04:03:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:30,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 [2024-11-22 04:03:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:30,987 INFO L225 Difference]: With dead ends: 937 [2024-11-22 04:03:30,991 INFO L226 Difference]: Without dead ends: 934 [2024-11-22 04:03:30,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 04:03:30,993 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 901 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:30,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 589 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:03:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-11-22 04:03:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 884. [2024-11-22 04:03:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 786 states have (on average 1.3295165394402035) internal successors, (1045), 791 states have internal predecessors, (1045), 64 states have call successors, (64), 34 states have call predecessors, (64), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2024-11-22 04:03:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1190 transitions. [2024-11-22 04:03:31,059 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1190 transitions. Word has length 68 [2024-11-22 04:03:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:31,060 INFO L471 AbstractCegarLoop]: Abstraction has 884 states and 1190 transitions. [2024-11-22 04:03:31,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-22 04:03:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1190 transitions. [2024-11-22 04:03:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 04:03:31,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:31,063 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:31,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 04:03:31,263 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 [2024-11-22 04:03:31,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:31,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1699860191, now seen corresponding path program 1 times [2024-11-22 04:03:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075645472] [2024-11-22 04:03:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 04:03:31,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075645472] [2024-11-22 04:03:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075645472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141058952] [2024-11-22 04:03:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:31,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:31,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:31,332 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) [2024-11-22 04:03:31,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 04:03:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:31,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 04:03:31,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:31,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:03:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 04:03:31,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141058952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:03:31,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:03:31,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-22 04:03:31,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710024923] [2024-11-22 04:03:31,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:03:31,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 04:03:31,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 04:03:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:03:31,764 INFO L87 Difference]: Start difference. First operand 884 states and 1190 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 04:03:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:32,167 INFO L93 Difference]: Finished difference Result 1949 states and 2568 transitions. [2024-11-22 04:03:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 04:03:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 7 states have call successors, (10), 5 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 [2024-11-22 04:03:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:32,176 INFO L225 Difference]: With dead ends: 1949 [2024-11-22 04:03:32,176 INFO L226 Difference]: Without dead ends: 1393 [2024-11-22 04:03:32,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-22 04:03:32,181 INFO L432 NwaCegarLoop]: 582 mSDtfsCounter, 672 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:32,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 3553 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-11-22 04:03:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1081. [2024-11-22 04:03:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 965 states have (on average 1.3088082901554403) internal successors, (1263), 974 states have internal predecessors, (1263), 73 states have call successors, (73), 41 states have call predecessors, (73), 41 states have return successors, (94), 66 states have call predecessors, (94), 70 states have call successors, (94) [2024-11-22 04:03:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1430 transitions. [2024-11-22 04:03:32,242 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1430 transitions. Word has length 69 [2024-11-22 04:03:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:32,243 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1430 transitions. [2024-11-22 04:03:32,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 04:03:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1430 transitions. [2024-11-22 04:03:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-22 04:03:32,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:32,247 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] [2024-11-22 04:03:32,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 04:03:32,448 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 [2024-11-22 04:03:32,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:32,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash -651103349, now seen corresponding path program 1 times [2024-11-22 04:03:32,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:32,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939515894] [2024-11-22 04:03:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:32,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 04:03:32,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939515894] [2024-11-22 04:03:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939515894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:32,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879662684] [2024-11-22 04:03:32,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:32,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:32,488 INFO L87 Difference]: Start difference. First operand 1081 states and 1430 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 04:03:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:32,531 INFO L93 Difference]: Finished difference Result 1633 states and 2124 transitions. [2024-11-22 04:03:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-22 04:03:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:32,536 INFO L225 Difference]: With dead ends: 1633 [2024-11-22 04:03:32,537 INFO L226 Difference]: Without dead ends: 1017 [2024-11-22 04:03:32,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:32,539 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 475 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 601 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 [2024-11-22 04:03:32,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 601 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-22 04:03:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1011. [2024-11-22 04:03:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 901 states have (on average 1.3018867924528301) internal successors, (1173), 911 states have internal predecessors, (1173), 70 states have call successors, (70), 38 states have call predecessors, (70), 38 states have return successors, (90), 62 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-22 04:03:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1333 transitions. [2024-11-22 04:03:32,587 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1333 transitions. Word has length 88 [2024-11-22 04:03:32,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:32,588 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1333 transitions. [2024-11-22 04:03:32,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 04:03:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1333 transitions. [2024-11-22 04:03:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 04:03:32,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:32,592 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] [2024-11-22 04:03:32,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:03:32,592 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:32,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1364600849, now seen corresponding path program 1 times [2024-11-22 04:03:32,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:32,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703867784] [2024-11-22 04:03:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:32,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 04:03:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:32,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703867784] [2024-11-22 04:03:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703867784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:32,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262124798] [2024-11-22 04:03:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:32,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:32,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:32,675 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) [2024-11-22 04:03:32,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 04:03:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:32,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 04:03:32,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 04:03:32,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:03:32,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262124798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:03:32,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-22 04:03:32,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603837464] [2024-11-22 04:03:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:32,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:32,790 INFO L87 Difference]: Start difference. First operand 1011 states and 1333 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) [2024-11-22 04:03:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:32,831 INFO L93 Difference]: Finished difference Result 1333 states and 1725 transitions. [2024-11-22 04:03:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:32,832 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 [2024-11-22 04:03:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:32,834 INFO L225 Difference]: With dead ends: 1333 [2024-11-22 04:03:32,834 INFO L226 Difference]: Without dead ends: 268 [2024-11-22 04:03:32,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:32,836 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 60 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:32,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1021 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-22 04:03:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-22 04:03:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.5420168067226891) internal successors, (367), 240 states have internal predecessors, (367), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 04:03:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 411 transitions. [2024-11-22 04:03:32,846 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 411 transitions. Word has length 103 [2024-11-22 04:03:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:32,846 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 411 transitions. [2024-11-22 04:03:32,846 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) [2024-11-22 04:03:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 411 transitions. [2024-11-22 04:03:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:32,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:32,848 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] [2024-11-22 04:03:32,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 04:03:33,048 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,SelfDestructingSolverStorable10 [2024-11-22 04:03:33,049 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:33,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:33,050 INFO L85 PathProgramCache]: Analyzing trace with hash 535279623, now seen corresponding path program 1 times [2024-11-22 04:03:33,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:33,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792533374] [2024-11-22 04:03:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:33,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792533374] [2024-11-22 04:03:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792533374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:33,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933399654] [2024-11-22 04:03:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:33,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:33,111 INFO L87 Difference]: Start difference. First operand 268 states and 411 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:33,126 INFO L93 Difference]: Finished difference Result 524 states and 803 transitions. [2024-11-22 04:03:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 2 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 124 [2024-11-22 04:03:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:33,129 INFO L225 Difference]: With dead ends: 524 [2024-11-22 04:03:33,129 INFO L226 Difference]: Without dead ends: 268 [2024-11-22 04:03:33,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:33,130 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 399 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:33,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 410 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-22 04:03:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-22 04:03:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.5378151260504203) internal successors, (366), 240 states have internal predecessors, (366), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 04:03:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 410 transitions. [2024-11-22 04:03:33,142 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 410 transitions. Word has length 124 [2024-11-22 04:03:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:33,142 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 410 transitions. [2024-11-22 04:03:33,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 410 transitions. [2024-11-22 04:03:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:33,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:33,144 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] [2024-11-22 04:03:33,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:03:33,144 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:33,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2112324731, now seen corresponding path program 1 times [2024-11-22 04:03:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:33,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322919126] [2024-11-22 04:03:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:33,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322919126] [2024-11-22 04:03:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322919126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:33,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:33,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433841134] [2024-11-22 04:03:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:33,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:33,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:33,245 INFO L87 Difference]: Start difference. First operand 268 states and 410 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:33,819 INFO L93 Difference]: Finished difference Result 800 states and 1238 transitions. [2024-11-22 04:03:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:03:33,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:33,822 INFO L225 Difference]: With dead ends: 800 [2024-11-22 04:03:33,822 INFO L226 Difference]: Without dead ends: 548 [2024-11-22 04:03:33,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:33,824 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 748 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:33,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1134 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:33,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-22 04:03:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 527. [2024-11-22 04:03:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 474 states have (on average 1.5506329113924051) internal successors, (735), 477 states have internal predecessors, (735), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2024-11-22 04:03:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 812 transitions. [2024-11-22 04:03:33,851 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 812 transitions. Word has length 124 [2024-11-22 04:03:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:33,851 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 812 transitions. [2024-11-22 04:03:33,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 812 transitions. [2024-11-22 04:03:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:33,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:33,853 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] [2024-11-22 04:03:33,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:03:33,853 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:33,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1559360963, now seen corresponding path program 1 times [2024-11-22 04:03:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820447317] [2024-11-22 04:03:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:33,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820447317] [2024-11-22 04:03:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820447317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:33,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79307630] [2024-11-22 04:03:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:33,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:33,954 INFO L87 Difference]: Start difference. First operand 527 states and 812 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:34,447 INFO L93 Difference]: Finished difference Result 1365 states and 2127 transitions. [2024-11-22 04:03:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:34,451 INFO L225 Difference]: With dead ends: 1365 [2024-11-22 04:03:34,451 INFO L226 Difference]: Without dead ends: 854 [2024-11-22 04:03:34,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:34,453 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 747 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:34,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2186 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-22 04:03:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 769. [2024-11-22 04:03:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 693 states have (on average 1.544011544011544) internal successors, (1070), 697 states have internal predecessors, (1070), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (57), 54 states have call predecessors, (57), 53 states have call successors, (57) [2024-11-22 04:03:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1182 transitions. [2024-11-22 04:03:34,501 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1182 transitions. Word has length 124 [2024-11-22 04:03:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:34,501 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1182 transitions. [2024-11-22 04:03:34,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1182 transitions. [2024-11-22 04:03:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:34,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:34,502 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] [2024-11-22 04:03:34,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:03:34,503 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:34,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1677802437, now seen corresponding path program 1 times [2024-11-22 04:03:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219803002] [2024-11-22 04:03:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:34,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:34,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:34,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219803002] [2024-11-22 04:03:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219803002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:34,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701861375] [2024-11-22 04:03:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:34,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:34,595 INFO L87 Difference]: Start difference. First operand 769 states and 1182 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:35,084 INFO L93 Difference]: Finished difference Result 2131 states and 3316 transitions. [2024-11-22 04:03:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:35,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:35,091 INFO L225 Difference]: With dead ends: 2131 [2024-11-22 04:03:35,091 INFO L226 Difference]: Without dead ends: 1378 [2024-11-22 04:03:35,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:35,094 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 742 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:35,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2170 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-22 04:03:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1282. [2024-11-22 04:03:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1158 states have (on average 1.5466321243523315) internal successors, (1791), 1166 states have internal predecessors, (1791), 87 states have call successors, (87), 31 states have call predecessors, (87), 36 states have return successors, (101), 88 states have call predecessors, (101), 85 states have call successors, (101) [2024-11-22 04:03:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1979 transitions. [2024-11-22 04:03:35,169 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1979 transitions. Word has length 124 [2024-11-22 04:03:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:35,170 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1979 transitions. [2024-11-22 04:03:35,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1979 transitions. [2024-11-22 04:03:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:35,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:35,171 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] [2024-11-22 04:03:35,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 04:03:35,171 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:35,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1227870845, now seen corresponding path program 1 times [2024-11-22 04:03:35,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:35,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998255826] [2024-11-22 04:03:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:35,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:35,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998255826] [2024-11-22 04:03:35,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998255826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:35,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:35,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185048424] [2024-11-22 04:03:35,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:35,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:35,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:35,248 INFO L87 Difference]: Start difference. First operand 1282 states and 1979 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:35,507 INFO L93 Difference]: Finished difference Result 2691 states and 4214 transitions. [2024-11-22 04:03:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:35,514 INFO L225 Difference]: With dead ends: 2691 [2024-11-22 04:03:35,514 INFO L226 Difference]: Without dead ends: 1425 [2024-11-22 04:03:35,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:35,518 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 536 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:35,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 803 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2024-11-22 04:03:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1282. [2024-11-22 04:03:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1158 states have (on average 1.5423143350604491) internal successors, (1786), 1166 states have internal predecessors, (1786), 87 states have call successors, (87), 31 states have call predecessors, (87), 36 states have return successors, (101), 88 states have call predecessors, (101), 85 states have call successors, (101) [2024-11-22 04:03:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1974 transitions. [2024-11-22 04:03:35,581 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1974 transitions. Word has length 124 [2024-11-22 04:03:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:35,582 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1974 transitions. [2024-11-22 04:03:35,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1974 transitions. [2024-11-22 04:03:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:35,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:35,584 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] [2024-11-22 04:03:35,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:03:35,584 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:35,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1200387777, now seen corresponding path program 1 times [2024-11-22 04:03:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032629975] [2024-11-22 04:03:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:35,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:35,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032629975] [2024-11-22 04:03:35,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032629975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:35,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:35,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:35,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781774620] [2024-11-22 04:03:35,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:35,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:35,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:35,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:35,704 INFO L87 Difference]: Start difference. First operand 1282 states and 1974 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:36,321 INFO L93 Difference]: Finished difference Result 3742 states and 5840 transitions. [2024-11-22 04:03:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:36,332 INFO L225 Difference]: With dead ends: 3742 [2024-11-22 04:03:36,332 INFO L226 Difference]: Without dead ends: 2476 [2024-11-22 04:03:36,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:36,335 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 726 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:36,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 2125 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2024-11-22 04:03:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2371. [2024-11-22 04:03:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2145 states have (on average 1.5524475524475525) internal successors, (3330), 2167 states have internal predecessors, (3330), 151 states have call successors, (151), 55 states have call predecessors, (151), 74 states have return successors, (213), 156 states have call predecessors, (213), 149 states have call successors, (213) [2024-11-22 04:03:36,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3694 transitions. [2024-11-22 04:03:36,497 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3694 transitions. Word has length 124 [2024-11-22 04:03:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:36,497 INFO L471 AbstractCegarLoop]: Abstraction has 2371 states and 3694 transitions. [2024-11-22 04:03:36,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3694 transitions. [2024-11-22 04:03:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:36,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:36,499 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] [2024-11-22 04:03:36,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:03:36,499 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:36,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash -106754621, now seen corresponding path program 1 times [2024-11-22 04:03:36,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:36,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068613638] [2024-11-22 04:03:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:36,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068613638] [2024-11-22 04:03:36,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068613638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:36,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:36,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220691142] [2024-11-22 04:03:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:36,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:36,584 INFO L87 Difference]: Start difference. First operand 2371 states and 3694 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:36,954 INFO L93 Difference]: Finished difference Result 5045 states and 7998 transitions. [2024-11-22 04:03:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:36,965 INFO L225 Difference]: With dead ends: 5045 [2024-11-22 04:03:36,965 INFO L226 Difference]: Without dead ends: 2690 [2024-11-22 04:03:36,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:36,970 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 532 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:36,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 789 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2024-11-22 04:03:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2371. [2024-11-22 04:03:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2145 states have (on average 1.5482517482517482) internal successors, (3321), 2167 states have internal predecessors, (3321), 151 states have call successors, (151), 55 states have call predecessors, (151), 74 states have return successors, (213), 156 states have call predecessors, (213), 149 states have call successors, (213) [2024-11-22 04:03:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3685 transitions. [2024-11-22 04:03:37,082 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3685 transitions. Word has length 124 [2024-11-22 04:03:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:37,082 INFO L471 AbstractCegarLoop]: Abstraction has 2371 states and 3685 transitions. [2024-11-22 04:03:37,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3685 transitions. [2024-11-22 04:03:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:37,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:37,084 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] [2024-11-22 04:03:37,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:03:37,084 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:37,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1790742145, now seen corresponding path program 1 times [2024-11-22 04:03:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552983697] [2024-11-22 04:03:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:37,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552983697] [2024-11-22 04:03:37,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552983697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:37,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:37,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:37,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617148642] [2024-11-22 04:03:37,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:37,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:37,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:37,202 INFO L87 Difference]: Start difference. First operand 2371 states and 3685 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:38,032 INFO L93 Difference]: Finished difference Result 7197 states and 11387 transitions. [2024-11-22 04:03:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:38,063 INFO L225 Difference]: With dead ends: 7197 [2024-11-22 04:03:38,064 INFO L226 Difference]: Without dead ends: 4842 [2024-11-22 04:03:38,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:38,075 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 713 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:38,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 2094 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2024-11-22 04:03:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4711. [2024-11-22 04:03:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4711 states, 4263 states have (on average 1.5639221205723668) internal successors, (6667), 4331 states have internal predecessors, (6667), 279 states have call successors, (279), 103 states have call predecessors, (279), 168 states have return successors, (533), 292 states have call predecessors, (533), 277 states have call successors, (533) [2024-11-22 04:03:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 7479 transitions. [2024-11-22 04:03:38,375 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 7479 transitions. Word has length 124 [2024-11-22 04:03:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:38,376 INFO L471 AbstractCegarLoop]: Abstraction has 4711 states and 7479 transitions. [2024-11-22 04:03:38,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 7479 transitions. [2024-11-22 04:03:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:38,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:38,380 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] [2024-11-22 04:03:38,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:03:38,380 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:38,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1473184253, now seen corresponding path program 1 times [2024-11-22 04:03:38,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:38,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800612881] [2024-11-22 04:03:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:38,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800612881] [2024-11-22 04:03:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800612881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:38,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:38,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618992762] [2024-11-22 04:03:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:38,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:38,543 INFO L87 Difference]: Start difference. First operand 4711 states and 7479 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:39,124 INFO L93 Difference]: Finished difference Result 10153 states and 16470 transitions. [2024-11-22 04:03:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:39,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:39,203 INFO L225 Difference]: With dead ends: 10153 [2024-11-22 04:03:39,205 INFO L226 Difference]: Without dead ends: 5458 [2024-11-22 04:03:39,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:39,220 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 541 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:39,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 739 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:03:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2024-11-22 04:03:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 4711. [2024-11-22 04:03:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4711 states, 4263 states have (on average 1.5599343185550083) internal successors, (6650), 4331 states have internal predecessors, (6650), 279 states have call successors, (279), 103 states have call predecessors, (279), 168 states have return successors, (533), 292 states have call predecessors, (533), 277 states have call successors, (533) [2024-11-22 04:03:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 7462 transitions. [2024-11-22 04:03:39,536 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 7462 transitions. Word has length 124 [2024-11-22 04:03:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:39,537 INFO L471 AbstractCegarLoop]: Abstraction has 4711 states and 7462 transitions. [2024-11-22 04:03:39,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 7462 transitions. [2024-11-22 04:03:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:39,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:39,541 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] [2024-11-22 04:03:39,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 04:03:39,542 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:39,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 915379777, now seen corresponding path program 1 times [2024-11-22 04:03:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792251620] [2024-11-22 04:03:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:39,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792251620] [2024-11-22 04:03:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792251620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:39,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299971060] [2024-11-22 04:03:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:39,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:39,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:39,704 INFO L87 Difference]: Start difference. First operand 4711 states and 7462 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:40,742 INFO L93 Difference]: Finished difference Result 15373 states and 24909 transitions. [2024-11-22 04:03:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:40,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:40,814 INFO L225 Difference]: With dead ends: 15373 [2024-11-22 04:03:40,815 INFO L226 Difference]: Without dead ends: 10678 [2024-11-22 04:03:40,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:40,839 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 762 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:40,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2046 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:03:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2024-11-22 04:03:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 9561. [2024-11-22 04:03:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9561 states, 8631 states have (on average 1.5747885528907426) internal successors, (13592), 8845 states have internal predecessors, (13592), 519 states have call successors, (519), 199 states have call predecessors, (519), 410 states have return successors, (1541), 548 states have call predecessors, (1541), 517 states have call successors, (1541) [2024-11-22 04:03:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9561 states to 9561 states and 15652 transitions. [2024-11-22 04:03:41,630 INFO L78 Accepts]: Start accepts. Automaton has 9561 states and 15652 transitions. Word has length 124 [2024-11-22 04:03:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:41,631 INFO L471 AbstractCegarLoop]: Abstraction has 9561 states and 15652 transitions. [2024-11-22 04:03:41,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9561 states and 15652 transitions. [2024-11-22 04:03:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:41,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:41,636 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] [2024-11-22 04:03:41,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 04:03:41,636 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:41,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1778516413, now seen corresponding path program 1 times [2024-11-22 04:03:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830143109] [2024-11-22 04:03:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:41,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830143109] [2024-11-22 04:03:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830143109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:41,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745639153] [2024-11-22 04:03:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:41,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:41,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:41,726 INFO L87 Difference]: Start difference. First operand 9561 states and 15652 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:43,290 INFO L93 Difference]: Finished difference Result 31613 states and 53637 transitions. [2024-11-22 04:03:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:43,398 INFO L225 Difference]: With dead ends: 31613 [2024-11-22 04:03:43,398 INFO L226 Difference]: Without dead ends: 22068 [2024-11-22 04:03:43,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:43,442 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 859 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:43,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2038 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22068 states. [2024-11-22 04:03:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22068 to 20426. [2024-11-22 04:03:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20426 states, 18386 states have (on average 1.5955618405308387) internal successors, (29336), 19054 states have internal predecessors, (29336), 983 states have call successors, (983), 391 states have call predecessors, (983), 1056 states have return successors, (5077), 1044 states have call predecessors, (5077), 981 states have call successors, (5077) [2024-11-22 04:03:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20426 states to 20426 states and 35396 transitions. [2024-11-22 04:03:45,329 INFO L78 Accepts]: Start accepts. Automaton has 20426 states and 35396 transitions. Word has length 124 [2024-11-22 04:03:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:45,329 INFO L471 AbstractCegarLoop]: Abstraction has 20426 states and 35396 transitions. [2024-11-22 04:03:45,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20426 states and 35396 transitions. [2024-11-22 04:03:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:45,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:45,342 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] [2024-11-22 04:03:45,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 04:03:45,342 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1459719681, now seen corresponding path program 1 times [2024-11-22 04:03:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:45,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283677044] [2024-11-22 04:03:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:45,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:45,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283677044] [2024-11-22 04:03:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283677044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:45,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917895515] [2024-11-22 04:03:45,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:45,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:45,464 INFO L87 Difference]: Start difference. First operand 20426 states and 35396 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:48,952 INFO L93 Difference]: Finished difference Result 66626 states and 122247 transitions. [2024-11-22 04:03:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:48,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:03:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:49,300 INFO L225 Difference]: With dead ends: 66626 [2024-11-22 04:03:49,300 INFO L226 Difference]: Without dead ends: 46216 [2024-11-22 04:03:49,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:49,361 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 791 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:49,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2012 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:03:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46216 states. [2024-11-22 04:03:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46216 to 44004. [2024-11-22 04:03:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44004 states, 39290 states have (on average 1.6074828200559939) internal successors, (63158), 41352 states have internal predecessors, (63158), 1879 states have call successors, (1879), 775 states have call predecessors, (1879), 2834 states have return successors, (18261), 2004 states have call predecessors, (18261), 1877 states have call successors, (18261) [2024-11-22 04:03:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44004 states to 44004 states and 83298 transitions. [2024-11-22 04:03:54,109 INFO L78 Accepts]: Start accepts. Automaton has 44004 states and 83298 transitions. Word has length 124 [2024-11-22 04:03:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:54,110 INFO L471 AbstractCegarLoop]: Abstraction has 44004 states and 83298 transitions. [2024-11-22 04:03:54,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 44004 states and 83298 transitions. [2024-11-22 04:03:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:03:54,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:54,126 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:54,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 04:03:54,127 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:54,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash -159255233, now seen corresponding path program 1 times [2024-11-22 04:03:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622339467] [2024-11-22 04:03:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:54,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622339467] [2024-11-22 04:03:54,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622339467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:54,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:54,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:54,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980469084] [2024-11-22 04:03:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:54,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:54,235 INFO L87 Difference]: Start difference. First operand 44004 states and 83298 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:04:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:02,598 INFO L93 Difference]: Finished difference Result 143420 states and 297955 transitions. [2024-11-22 04:04:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:04:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 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 124 [2024-11-22 04:04:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:04,009 INFO L225 Difference]: With dead ends: 143420 [2024-11-22 04:04:04,010 INFO L226 Difference]: Without dead ends: 99432 [2024-11-22 04:04:04,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:04:04,263 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 756 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:04,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2000 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:04:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99432 states. [2024-11-22 04:04:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99432 to 96071. [2024-11-22 04:04:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96071 states, 84615 states have (on average 1.6125036931986054) internal successors, (136442), 90923 states have internal predecessors, (136442), 3607 states have call successors, (3607), 1543 states have call predecessors, (3607), 7848 states have return successors, (69141), 3860 states have call predecessors, (69141), 3605 states have call successors, (69141) [2024-11-22 04:04:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96071 states to 96071 states and 209190 transitions. [2024-11-22 04:04:13,202 INFO L78 Accepts]: Start accepts. Automaton has 96071 states and 209190 transitions. Word has length 124 [2024-11-22 04:04:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:13,202 INFO L471 AbstractCegarLoop]: Abstraction has 96071 states and 209190 transitions. [2024-11-22 04:04:13,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:04:13,206 INFO L276 IsEmpty]: Start isEmpty. Operand 96071 states and 209190 transitions. [2024-11-22 04:04:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 04:04:13,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:13,238 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] [2024-11-22 04:04:13,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 04:04:13,239 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:13,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1042764223, now seen corresponding path program 1 times [2024-11-22 04:04:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864701834] [2024-11-22 04:04:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:13,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864701834] [2024-11-22 04:04:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864701834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:13,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:04:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139361070] [2024-11-22 04:04:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:13,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:04:13,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:04:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:13,326 INFO L87 Difference]: Start difference. First operand 96071 states and 209190 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)