./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.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.05.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 2468c605d5c29b15a54525a5c6944fa0a2b4d36426cacd5fefa10555cb2b8a7a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:03:02,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:03:02,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:03:02,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:03:02,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:03:02,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:03:02,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:03:02,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:03:02,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:03:02,650 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:03:02,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:03:02,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:03:02,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:03:02,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:03:02,651 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:03:02,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:03:02,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:03:02,654 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:03:02,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:03:02,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:03:02,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:03:02,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:03:02,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:03:02,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:03:02,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:03:02,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:03:02,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:03:02,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:03:02,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:03:02,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:03:02,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:03:02,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:03:02,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:03:02,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:03:02,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:03:02,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:03:02,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:03:02,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:03:02,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:03:02,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:03:02,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:03:02,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:03:02,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2468c605d5c29b15a54525a5c6944fa0a2b4d36426cacd5fefa10555cb2b8a7a [2024-11-22 04:03:02,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:03:02,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:03:02,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:03:02,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:03:02,875 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:03:02,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2024-11-22 04:03:04,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:03:04,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:03:04,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2024-11-22 04:03:04,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e38db3e/e2e083cee6cd4f7394758ea87eda640f/FLAGda362eafb [2024-11-22 04:03:04,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e38db3e/e2e083cee6cd4f7394758ea87eda640f [2024-11-22 04:03:04,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:03:04,636 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:03:04,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:03:04,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:03:04,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:03:04,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:04" (1/1) ... [2024-11-22 04:03:04,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a82568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:04, skipping insertion in model container [2024-11-22 04:03:04,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:04" (1/1) ... [2024-11-22 04:03:04,683 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:03:04,832 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.05.cil-2.c[913,926] [2024-11-22 04:03:04,862 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.05.cil-2.c[5977,5990] [2024-11-22 04:03:04,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:03:04,934 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:03:04,944 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.05.cil-2.c[913,926] [2024-11-22 04:03:04,958 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.05.cil-2.c[5977,5990] [2024-11-22 04:03:04,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:03:05,008 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:03:05,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05 WrapperNode [2024-11-22 04:03:05,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:03:05,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:03:05,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:03:05,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:03:05,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,055 INFO L138 Inliner]: procedures = 58, calls = 64, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 669 [2024-11-22 04:03:05,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:03:05,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:03:05,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:03:05,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:03:05,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,084 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 04:03:05,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:03:05,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:03:05,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:03:05,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:03:05,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (1/1) ... [2024-11-22 04:03:05,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:03:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:05,134 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 04:03:05,136 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 04:03:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:03:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:03:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-22 04:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-22 04:03:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:03:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:03:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:03:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:03:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:03:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:03:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:03:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:03:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:03:05,171 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:03:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:03:05,250 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:03:05,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:03:05,817 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-11-22 04:03:05,818 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:03:05,844 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:03:05,846 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-22 04:03:05,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:05 BoogieIcfgContainer [2024-11-22 04:03:05,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:03:05,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:03:05,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:03:05,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:03:05,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:03:04" (1/3) ... [2024-11-22 04:03:05,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a784311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:05, skipping insertion in model container [2024-11-22 04:03:05,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:05" (2/3) ... [2024-11-22 04:03:05,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a784311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:05, skipping insertion in model container [2024-11-22 04:03:05,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:05" (3/3) ... [2024-11-22 04:03:05,855 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2024-11-22 04:03:05,868 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:03:05,868 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:03:05,917 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:03:05,922 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;@25c693ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:03:05,923 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:03:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 253 states have (on average 1.6007905138339922) internal successors, (405), 260 states have internal predecessors, (405), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 04:03:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 04:03:05,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:05,937 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 04:03:05,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:05,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash -895036036, now seen corresponding path program 1 times [2024-11-22 04:03:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610937692] [2024-11-22 04:03:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:06,177 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 04:03:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:06,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610937692] [2024-11-22 04:03:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610937692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:06,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862663965] [2024-11-22 04:03:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:06,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:06,202 INFO L87 Difference]: Start difference. First operand has 293 states, 253 states have (on average 1.6007905138339922) internal successors, (405), 260 states have internal predecessors, (405), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) 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 04:03:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:06,281 INFO L93 Difference]: Finished difference Result 626 states and 984 transitions. [2024-11-22 04:03:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:06,284 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 04:03:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:06,295 INFO L225 Difference]: With dead ends: 626 [2024-11-22 04:03:06,295 INFO L226 Difference]: Without dead ends: 341 [2024-11-22 04:03:06,299 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 04:03:06,301 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 406 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 527 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 04:03:06,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 527 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-22 04:03:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 337. [2024-11-22 04:03:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 294 states have (on average 1.4795918367346939) internal successors, (435), 298 states have internal predecessors, (435), 31 states have call successors, (31), 12 states have call predecessors, (31), 10 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-22 04:03:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 497 transitions. [2024-11-22 04:03:06,356 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 497 transitions. Word has length 44 [2024-11-22 04:03:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:06,356 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 497 transitions. [2024-11-22 04:03:06,357 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 04:03:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 497 transitions. [2024-11-22 04:03:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 04:03:06,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:06,359 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 04:03:06,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:03:06,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:06,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:06,360 INFO L85 PathProgramCache]: Analyzing trace with hash -553118464, now seen corresponding path program 1 times [2024-11-22 04:03:06,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:06,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295677272] [2024-11-22 04:03:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:06,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:06,433 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 04:03:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295677272] [2024-11-22 04:03:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295677272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:06,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:06,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409403512] [2024-11-22 04:03:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:06,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:06,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:06,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:06,440 INFO L87 Difference]: Start difference. First operand 337 states and 497 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 04:03:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:06,482 INFO L93 Difference]: Finished difference Result 545 states and 785 transitions. [2024-11-22 04:03:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:06,483 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 04:03:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:06,485 INFO L225 Difference]: With dead ends: 545 [2024-11-22 04:03:06,485 INFO L226 Difference]: Without dead ends: 430 [2024-11-22 04:03:06,486 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 04:03:06,487 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 67 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 839 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 04:03:06,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 839 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-22 04:03:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 404. [2024-11-22 04:03:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 355 states have (on average 1.4619718309859155) internal successors, (519), 359 states have internal predecessors, (519), 34 states have call successors, (34), 15 states have call predecessors, (34), 13 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2024-11-22 04:03:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 588 transitions. [2024-11-22 04:03:06,515 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 588 transitions. Word has length 45 [2024-11-22 04:03:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:06,515 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 588 transitions. [2024-11-22 04:03:06,515 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 04:03:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 588 transitions. [2024-11-22 04:03:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 04:03:06,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:06,518 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 04:03:06,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:03:06,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:06,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:06,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1837475925, now seen corresponding path program 1 times [2024-11-22 04:03:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:06,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793363495] [2024-11-22 04:03:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:06,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:06,578 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 04:03:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793363495] [2024-11-22 04:03:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793363495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:06,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:06,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:06,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973813504] [2024-11-22 04:03:06,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:06,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:06,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:06,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:06,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:06,580 INFO L87 Difference]: Start difference. First operand 404 states and 588 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 04:03:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:06,614 INFO L93 Difference]: Finished difference Result 757 states and 1076 transitions. [2024-11-22 04:03:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:06,614 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 04:03:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:06,618 INFO L225 Difference]: With dead ends: 757 [2024-11-22 04:03:06,618 INFO L226 Difference]: Without dead ends: 575 [2024-11-22 04:03:06,619 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 04:03:06,621 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 394 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 506 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 04:03:06,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 506 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:06,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-22 04:03:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 561. [2024-11-22 04:03:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 494 states have (on average 1.4190283400809716) internal successors, (701), 500 states have internal predecessors, (701), 45 states have call successors, (45), 22 states have call predecessors, (45), 20 states have return successors, (51), 39 states have call predecessors, (51), 41 states have call successors, (51) [2024-11-22 04:03:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 797 transitions. [2024-11-22 04:03:06,666 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 797 transitions. Word has length 45 [2024-11-22 04:03:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:06,667 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 797 transitions. [2024-11-22 04:03:06,667 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 04:03:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 797 transitions. [2024-11-22 04:03:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 04:03:06,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:06,670 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 04:03:06,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:03:06,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:06,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1262824300, now seen corresponding path program 1 times [2024-11-22 04:03:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:06,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011644026] [2024-11-22 04:03:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:06,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:06,748 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 04:03:06,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:06,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011644026] [2024-11-22 04:03:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011644026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:06,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308479051] [2024-11-22 04:03:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:06,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:06,750 INFO L87 Difference]: Start difference. First operand 561 states and 797 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 04:03:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:06,789 INFO L93 Difference]: Finished difference Result 1073 states and 1494 transitions. [2024-11-22 04:03:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:06,790 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 04:03:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:06,794 INFO L225 Difference]: With dead ends: 1073 [2024-11-22 04:03:06,794 INFO L226 Difference]: Without dead ends: 734 [2024-11-22 04:03:06,796 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 04:03:06,797 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 55 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 886 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 04:03:06,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 886 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-22 04:03:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2024-11-22 04:03:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 645 states have (on average 1.3674418604651162) internal successors, (882), 651 states have internal predecessors, (882), 59 states have call successors, (59), 30 states have call predecessors, (59), 28 states have return successors, (73), 53 states have call predecessors, (73), 55 states have call successors, (73) [2024-11-22 04:03:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1014 transitions. [2024-11-22 04:03:06,840 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1014 transitions. Word has length 62 [2024-11-22 04:03:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:06,840 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1014 transitions. [2024-11-22 04:03:06,841 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 04:03:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1014 transitions. [2024-11-22 04:03:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:03:06,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:06,846 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 04:03:06,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:03:06,846 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:06,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2091011082, now seen corresponding path program 1 times [2024-11-22 04:03:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463531500] [2024-11-22 04:03:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:06,905 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 04:03:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463531500] [2024-11-22 04:03:06,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463531500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:06,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:06,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191780405] [2024-11-22 04:03:06,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:06,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:06,907 INFO L87 Difference]: Start difference. First operand 734 states and 1014 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 04:03:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:06,944 INFO L93 Difference]: Finished difference Result 1281 states and 1735 transitions. [2024-11-22 04:03:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:06,944 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 04:03:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:06,949 INFO L225 Difference]: With dead ends: 1281 [2024-11-22 04:03:06,949 INFO L226 Difference]: Without dead ends: 861 [2024-11-22 04:03:06,950 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 04:03:06,951 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 381 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 502 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 04:03:06,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 502 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-22 04:03:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2024-11-22 04:03:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 758 states have (on average 1.3377308707124012) internal successors, (1014), 764 states have internal predecessors, (1014), 67 states have call successors, (67), 36 states have call predecessors, (67), 34 states have return successors, (85), 61 states have call predecessors, (85), 63 states have call successors, (85) [2024-11-22 04:03:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1166 transitions. [2024-11-22 04:03:06,991 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1166 transitions. Word has length 67 [2024-11-22 04:03:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:06,992 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1166 transitions. [2024-11-22 04:03:06,992 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 04:03:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1166 transitions. [2024-11-22 04:03:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:03:06,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:06,995 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 04:03:06,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:03:06,995 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:06,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 101205040, now seen corresponding path program 1 times [2024-11-22 04:03:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640438080] [2024-11-22 04:03:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 04:03:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640438080] [2024-11-22 04:03:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640438080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847282084] [2024-11-22 04:03:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:07,076 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 04:03:07,077 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 04:03:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:07,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 04:03:07,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:07,293 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 04:03:07,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:03:07,345 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 04:03:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847282084] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:07,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 04:03:07,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-22 04:03:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791922982] [2024-11-22 04:03:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:07,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:03:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:03:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:03:07,347 INFO L87 Difference]: Start difference. First operand 861 states and 1166 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 04:03:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:07,504 INFO L93 Difference]: Finished difference Result 917 states and 1234 transitions. [2024-11-22 04:03:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-22 04:03:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:07,509 INFO L225 Difference]: With dead ends: 917 [2024-11-22 04:03:07,509 INFO L226 Difference]: Without dead ends: 914 [2024-11-22 04:03:07,510 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 04:03:07,512 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 745 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:07,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 510 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 04:03:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-11-22 04:03:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 860. [2024-11-22 04:03:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 758 states have (on average 1.3350923482849604) internal successors, (1012), 763 states have internal predecessors, (1012), 66 states have call successors, (66), 36 states have call predecessors, (66), 34 states have return successors, (85), 61 states have call predecessors, (85), 63 states have call successors, (85) [2024-11-22 04:03:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1163 transitions. [2024-11-22 04:03:07,560 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1163 transitions. Word has length 68 [2024-11-22 04:03:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:07,562 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1163 transitions. [2024-11-22 04:03:07,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 04:03:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1163 transitions. [2024-11-22 04:03:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 04:03:07,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:07,564 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:07,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 04:03:07,765 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 04:03:07,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:07,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1158524103, now seen corresponding path program 1 times [2024-11-22 04:03:07,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193936512] [2024-11-22 04:03:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 04:03:07,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193936512] [2024-11-22 04:03:07,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193936512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223982568] [2024-11-22 04:03:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:07,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:07,845 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 04:03:07,847 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 04:03:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:07,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 04:03:07,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:08,161 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 04:03:08,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:03:08,228 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 04:03:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223982568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:03:08,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:03:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-22 04:03:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477745289] [2024-11-22 04:03:08,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:03:08,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 04:03:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 04:03:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:03:08,231 INFO L87 Difference]: Start difference. First operand 860 states and 1163 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 04:03:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:08,584 INFO L93 Difference]: Finished difference Result 2204 states and 2947 transitions. [2024-11-22 04:03:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 04:03:08,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 04:03:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:08,591 INFO L225 Difference]: With dead ends: 2204 [2024-11-22 04:03:08,591 INFO L226 Difference]: Without dead ends: 1711 [2024-11-22 04:03:08,593 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 04:03:08,594 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 586 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:08,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 3468 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2024-11-22 04:03:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1217. [2024-11-22 04:03:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1079 states have (on average 1.3058387395736792) internal successors, (1409), 1089 states have internal predecessors, (1409), 86 states have call successors, (86), 50 states have call predecessors, (86), 50 states have return successors, (116), 78 states have call predecessors, (116), 83 states have call successors, (116) [2024-11-22 04:03:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1611 transitions. [2024-11-22 04:03:08,651 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1611 transitions. Word has length 69 [2024-11-22 04:03:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:08,652 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1611 transitions. [2024-11-22 04:03:08,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 04:03:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1611 transitions. [2024-11-22 04:03:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-22 04:03:08,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:08,655 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 04:03:08,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 04:03:08,858 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 04:03:08,859 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:08,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1880657665, now seen corresponding path program 1 times [2024-11-22 04:03:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:08,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404411253] [2024-11-22 04:03:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-22 04:03:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404411253] [2024-11-22 04:03:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404411253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346997209] [2024-11-22 04:03:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:08,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:08,969 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 04:03:08,971 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 04:03:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:09,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 04:03:09,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 04:03:09,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:03:09,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346997209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:09,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:03:09,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 04:03:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605229481] [2024-11-22 04:03:09,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:09,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:09,090 INFO L87 Difference]: Start difference. First operand 1217 states and 1611 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 04:03:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:09,134 INFO L93 Difference]: Finished difference Result 1863 states and 2452 transitions. [2024-11-22 04:03:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:09,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-22 04:03:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:09,138 INFO L225 Difference]: With dead ends: 1863 [2024-11-22 04:03:09,138 INFO L226 Difference]: Without dead ends: 1099 [2024-11-22 04:03:09,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 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 04:03:09,140 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 379 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 524 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 04:03:09,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 524 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-22 04:03:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1084. [2024-11-22 04:03:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 960 states have (on average 1.3052083333333333) internal successors, (1253), 971 states have internal predecessors, (1253), 78 states have call successors, (78), 44 states have call predecessors, (78), 44 states have return successors, (104), 69 states have call predecessors, (104), 75 states have call successors, (104) [2024-11-22 04:03:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1435 transitions. [2024-11-22 04:03:09,175 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1435 transitions. Word has length 88 [2024-11-22 04:03:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:09,175 INFO L471 AbstractCegarLoop]: Abstraction has 1084 states and 1435 transitions. [2024-11-22 04:03:09,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 04:03:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1435 transitions. [2024-11-22 04:03:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:09,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:09,178 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] [2024-11-22 04:03:09,184 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 04:03:09,381 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 04:03:09,382 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:09,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash 502229916, now seen corresponding path program 1 times [2024-11-22 04:03:09,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:09,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801526979] [2024-11-22 04:03:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:09,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:09,474 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 04:03:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801526979] [2024-11-22 04:03:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801526979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303144332] [2024-11-22 04:03:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:09,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:09,476 INFO L87 Difference]: Start difference. First operand 1084 states and 1435 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:09,998 INFO L93 Difference]: Finished difference Result 1522 states and 2118 transitions. [2024-11-22 04:03:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:10,005 INFO L225 Difference]: With dead ends: 1522 [2024-11-22 04:03:10,005 INFO L226 Difference]: Without dead ends: 1320 [2024-11-22 04:03:10,007 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 04:03:10,008 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 687 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:10,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2000 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-11-22 04:03:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1292. [2024-11-22 04:03:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1144 states have (on average 1.3452797202797202) internal successors, (1539), 1157 states have internal predecessors, (1539), 94 states have call successors, (94), 50 states have call predecessors, (94), 52 states have return successors, (127), 86 states have call predecessors, (127), 91 states have call successors, (127) [2024-11-22 04:03:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1760 transitions. [2024-11-22 04:03:10,061 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1760 transitions. Word has length 102 [2024-11-22 04:03:10,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:10,061 INFO L471 AbstractCegarLoop]: Abstraction has 1292 states and 1760 transitions. [2024-11-22 04:03:10,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1760 transitions. [2024-11-22 04:03:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:10,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:10,066 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] [2024-11-22 04:03:10,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 04:03:10,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:10,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1916254562, now seen corresponding path program 1 times [2024-11-22 04:03:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340646382] [2024-11-22 04:03:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:10,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:10,189 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 04:03:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340646382] [2024-11-22 04:03:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340646382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:10,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109550989] [2024-11-22 04:03:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:10,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:10,191 INFO L87 Difference]: Start difference. First operand 1292 states and 1760 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:10,687 INFO L93 Difference]: Finished difference Result 2143 states and 3088 transitions. [2024-11-22 04:03:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:10,694 INFO L225 Difference]: With dead ends: 2143 [2024-11-22 04:03:10,694 INFO L226 Difference]: Without dead ends: 1735 [2024-11-22 04:03:10,695 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 04:03:10,695 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 683 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:10,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1903 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-22 04:03:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1698. [2024-11-22 04:03:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1506 states have (on average 1.3930942895086322) internal successors, (2098), 1523 states have internal predecessors, (2098), 122 states have call successors, (122), 62 states have call predecessors, (122), 68 states have return successors, (171), 116 states have call predecessors, (171), 119 states have call successors, (171) [2024-11-22 04:03:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2391 transitions. [2024-11-22 04:03:10,768 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2391 transitions. Word has length 102 [2024-11-22 04:03:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:10,769 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 2391 transitions. [2024-11-22 04:03:10,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2391 transitions. [2024-11-22 04:03:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:10,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:10,771 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] [2024-11-22 04:03:10,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:03:10,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:10,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash 499581788, now seen corresponding path program 1 times [2024-11-22 04:03:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953668528] [2024-11-22 04:03:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:10,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:10,844 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 04:03:10,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:10,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953668528] [2024-11-22 04:03:10,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953668528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:10,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:10,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396847924] [2024-11-22 04:03:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:10,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:10,847 INFO L87 Difference]: Start difference. First operand 1698 states and 2391 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:11,152 INFO L93 Difference]: Finished difference Result 2604 states and 3838 transitions. [2024-11-22 04:03:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:11,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:11,160 INFO L225 Difference]: With dead ends: 2604 [2024-11-22 04:03:11,160 INFO L226 Difference]: Without dead ends: 1788 [2024-11-22 04:03:11,163 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 04:03:11,163 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 533 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:11,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 795 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2024-11-22 04:03:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1698. [2024-11-22 04:03:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1506 states have (on average 1.3897742363877823) internal successors, (2093), 1523 states have internal predecessors, (2093), 122 states have call successors, (122), 62 states have call predecessors, (122), 68 states have return successors, (171), 116 states have call predecessors, (171), 119 states have call successors, (171) [2024-11-22 04:03:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2386 transitions. [2024-11-22 04:03:11,272 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2386 transitions. Word has length 102 [2024-11-22 04:03:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:11,272 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 2386 transitions. [2024-11-22 04:03:11,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2386 transitions. [2024-11-22 04:03:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:11,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:11,277 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] [2024-11-22 04:03:11,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 04:03:11,278 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:11,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1824437982, now seen corresponding path program 1 times [2024-11-22 04:03:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:11,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274189745] [2024-11-22 04:03:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:11,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:11,370 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 04:03:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274189745] [2024-11-22 04:03:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274189745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:11,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:11,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891925757] [2024-11-22 04:03:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:11,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:11,372 INFO L87 Difference]: Start difference. First operand 1698 states and 2386 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:11,910 INFO L93 Difference]: Finished difference Result 3421 states and 5093 transitions. [2024-11-22 04:03:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:11,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:11,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:11,920 INFO L225 Difference]: With dead ends: 3421 [2024-11-22 04:03:11,920 INFO L226 Difference]: Without dead ends: 2607 [2024-11-22 04:03:11,922 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 04:03:11,923 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 670 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:11,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1867 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2024-11-22 04:03:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2558. [2024-11-22 04:03:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2272 states have (on average 1.4449823943661972) internal successors, (3283), 2303 states have internal predecessors, (3283), 178 states have call successors, (178), 86 states have call predecessors, (178), 106 states have return successors, (283), 176 states have call predecessors, (283), 175 states have call successors, (283) [2024-11-22 04:03:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3744 transitions. [2024-11-22 04:03:12,058 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3744 transitions. Word has length 102 [2024-11-22 04:03:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:12,059 INFO L471 AbstractCegarLoop]: Abstraction has 2558 states and 3744 transitions. [2024-11-22 04:03:12,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3744 transitions. [2024-11-22 04:03:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:12,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:12,062 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] [2024-11-22 04:03:12,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:03:12,062 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:12,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash -903771364, now seen corresponding path program 1 times [2024-11-22 04:03:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:12,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112100904] [2024-11-22 04:03:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:12,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:12,159 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 04:03:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112100904] [2024-11-22 04:03:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112100904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115175886] [2024-11-22 04:03:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:12,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:12,161 INFO L87 Difference]: Start difference. First operand 2558 states and 3744 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:12,756 INFO L93 Difference]: Finished difference Result 6160 states and 9527 transitions. [2024-11-22 04:03:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:12,775 INFO L225 Difference]: With dead ends: 6160 [2024-11-22 04:03:12,775 INFO L226 Difference]: Without dead ends: 4486 [2024-11-22 04:03:12,780 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 04:03:12,781 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 665 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:12,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1844 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2024-11-22 04:03:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4410. [2024-11-22 04:03:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3918 states have (on average 1.4979581419091372) internal successors, (5869), 3995 states have internal predecessors, (5869), 290 states have call successors, (290), 134 states have call predecessors, (290), 200 states have return successors, (603), 296 states have call predecessors, (603), 287 states have call successors, (603) [2024-11-22 04:03:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6762 transitions. [2024-11-22 04:03:13,083 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6762 transitions. Word has length 102 [2024-11-22 04:03:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:13,083 INFO L471 AbstractCegarLoop]: Abstraction has 4410 states and 6762 transitions. [2024-11-22 04:03:13,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6762 transitions. [2024-11-22 04:03:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:13,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:13,089 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] [2024-11-22 04:03:13,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:03:13,090 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:13,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1961609442, now seen corresponding path program 1 times [2024-11-22 04:03:13,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:13,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861619906] [2024-11-22 04:03:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:13,207 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 04:03:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861619906] [2024-11-22 04:03:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861619906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:13,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013113212] [2024-11-22 04:03:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:13,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:13,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:13,209 INFO L87 Difference]: Start difference. First operand 4410 states and 6762 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:14,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:14,000 INFO L93 Difference]: Finished difference Result 12753 states and 20558 transitions. [2024-11-22 04:03:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:14,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:14,039 INFO L225 Difference]: With dead ends: 12753 [2024-11-22 04:03:14,043 INFO L226 Difference]: Without dead ends: 9227 [2024-11-22 04:03:14,054 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 04:03:14,055 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 825 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:14,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1831 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9227 states. [2024-11-22 04:03:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9227 to 8416. [2024-11-22 04:03:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 7474 states have (on average 1.543885469628044) internal successors, (11539), 7697 states have internal predecessors, (11539), 498 states have call successors, (498), 230 states have call predecessors, (498), 442 states have return successors, (1611), 520 states have call predecessors, (1611), 495 states have call successors, (1611) [2024-11-22 04:03:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 13648 transitions. [2024-11-22 04:03:14,606 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 13648 transitions. Word has length 102 [2024-11-22 04:03:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:14,607 INFO L471 AbstractCegarLoop]: Abstraction has 8416 states and 13648 transitions. [2024-11-22 04:03:14,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 13648 transitions. [2024-11-22 04:03:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:14,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:14,615 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] [2024-11-22 04:03:14,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:03:14,615 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:14,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:14,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1190855388, now seen corresponding path program 1 times [2024-11-22 04:03:14,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:14,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298598750] [2024-11-22 04:03:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:14,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:14,732 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 04:03:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:14,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298598750] [2024-11-22 04:03:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298598750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:14,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:14,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651833853] [2024-11-22 04:03:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:14,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:14,734 INFO L87 Difference]: Start difference. First operand 8416 states and 13648 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:15,294 INFO L93 Difference]: Finished difference Result 17408 states and 29506 transitions. [2024-11-22 04:03:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:15,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:15,332 INFO L225 Difference]: With dead ends: 17408 [2024-11-22 04:03:15,332 INFO L226 Difference]: Without dead ends: 9874 [2024-11-22 04:03:15,356 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 04:03:15,357 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 534 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:15,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 745 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9874 states. [2024-11-22 04:03:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9874 to 8416. [2024-11-22 04:03:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 7474 states have (on average 1.5394701632325394) internal successors, (11506), 7697 states have internal predecessors, (11506), 498 states have call successors, (498), 230 states have call predecessors, (498), 442 states have return successors, (1611), 520 states have call predecessors, (1611), 495 states have call successors, (1611) [2024-11-22 04:03:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 13615 transitions. [2024-11-22 04:03:15,975 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 13615 transitions. Word has length 102 [2024-11-22 04:03:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:15,975 INFO L471 AbstractCegarLoop]: Abstraction has 8416 states and 13615 transitions. [2024-11-22 04:03:15,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 13615 transitions. [2024-11-22 04:03:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:15,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:15,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:15,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 04:03:15,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:15,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1431095134, now seen corresponding path program 1 times [2024-11-22 04:03:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653693740] [2024-11-22 04:03:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:15,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:16,089 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 04:03:16,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653693740] [2024-11-22 04:03:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653693740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:16,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:16,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:16,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026467135] [2024-11-22 04:03:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:16,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:16,092 INFO L87 Difference]: Start difference. First operand 8416 states and 13615 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:17,347 INFO L93 Difference]: Finished difference Result 25158 states and 42990 transitions. [2024-11-22 04:03:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:17,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:17,416 INFO L225 Difference]: With dead ends: 25158 [2024-11-22 04:03:17,416 INFO L226 Difference]: Without dead ends: 17626 [2024-11-22 04:03:17,437 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 04:03:17,438 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 667 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:17,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1775 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17626 states. [2024-11-22 04:03:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17626 to 16786. [2024-11-22 04:03:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16786 states, 14798 states have (on average 1.5604811461008243) internal successors, (23092), 15475 states have internal predecessors, (23092), 898 states have call successors, (898), 422 states have call predecessors, (898), 1088 states have return successors, (5147), 952 states have call predecessors, (5147), 895 states have call successors, (5147) [2024-11-22 04:03:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16786 states to 16786 states and 29137 transitions. [2024-11-22 04:03:18,480 INFO L78 Accepts]: Start accepts. Automaton has 16786 states and 29137 transitions. Word has length 102 [2024-11-22 04:03:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:18,480 INFO L471 AbstractCegarLoop]: Abstraction has 16786 states and 29137 transitions. [2024-11-22 04:03:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 16786 states and 29137 transitions. [2024-11-22 04:03:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:18,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:18,494 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] [2024-11-22 04:03:18,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:03:18,494 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:18,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1458160736, now seen corresponding path program 1 times [2024-11-22 04:03:18,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:18,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788412036] [2024-11-22 04:03:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:18,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:18,598 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 04:03:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788412036] [2024-11-22 04:03:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788412036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:18,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554703353] [2024-11-22 04:03:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:18,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:18,600 INFO L87 Difference]: Start difference. First operand 16786 states and 29137 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:21,015 INFO L93 Difference]: Finished difference Result 51701 states and 97060 transitions. [2024-11-22 04:03:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:21,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:21,187 INFO L225 Difference]: With dead ends: 51701 [2024-11-22 04:03:21,187 INFO L226 Difference]: Without dead ends: 35799 [2024-11-22 04:03:21,236 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 04:03:21,237 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 684 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:21,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1754 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35799 states. [2024-11-22 04:03:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35799 to 34640. [2024-11-22 04:03:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34640 states, 30106 states have (on average 1.565468677340065) internal successors, (47130), 32177 states have internal predecessors, (47130), 1666 states have call successors, (1666), 806 states have call predecessors, (1666), 2866 states have return successors, (18331), 1784 states have call predecessors, (18331), 1663 states have call successors, (18331) [2024-11-22 04:03:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34640 states to 34640 states and 67127 transitions. [2024-11-22 04:03:24,366 INFO L78 Accepts]: Start accepts. Automaton has 34640 states and 67127 transitions. Word has length 102 [2024-11-22 04:03:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:24,367 INFO L471 AbstractCegarLoop]: Abstraction has 34640 states and 67127 transitions. [2024-11-22 04:03:24,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 34640 states and 67127 transitions. [2024-11-22 04:03:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:24,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:24,388 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] [2024-11-22 04:03:24,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:03:24,389 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:24,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -619176162, now seen corresponding path program 1 times [2024-11-22 04:03:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273806156] [2024-11-22 04:03:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:24,497 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 04:03:24,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273806156] [2024-11-22 04:03:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273806156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381139964] [2024-11-22 04:03:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:24,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:24,500 INFO L87 Difference]: Start difference. First operand 34640 states and 67127 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:29,545 INFO L93 Difference]: Finished difference Result 107384 states and 235602 transitions. [2024-11-22 04:03:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2024-11-22 04:03:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:29,959 INFO L225 Difference]: With dead ends: 107384 [2024-11-22 04:03:29,960 INFO L226 Difference]: Without dead ends: 73628 [2024-11-22 04:03:30,071 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 04:03:30,072 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 649 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:30,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1740 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73628 states. [2024-11-22 04:03:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73628 to 72342. [2024-11-22 04:03:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72342 states, 61322 states have (on average 1.5493949969016014) internal successors, (95012), 67639 states have internal predecessors, (95012), 3138 states have call successors, (3138), 1574 states have call predecessors, (3138), 7880 states have return successors, (69211), 3384 states have call predecessors, (69211), 3135 states have call successors, (69211) [2024-11-22 04:03:38,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72342 states to 72342 states and 167361 transitions. [2024-11-22 04:03:38,981 INFO L78 Accepts]: Start accepts. Automaton has 72342 states and 167361 transitions. Word has length 102 [2024-11-22 04:03:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:38,982 INFO L471 AbstractCegarLoop]: Abstraction has 72342 states and 167361 transitions. [2024-11-22 04:03:38,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 04:03:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 72342 states and 167361 transitions. [2024-11-22 04:03:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 04:03:39,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:39,023 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] [2024-11-22 04:03:39,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:03:39,023 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:39,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1114928288, now seen corresponding path program 1 times [2024-11-22 04:03:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:39,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393409680] [2024-11-22 04:03:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:39,074 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 04:03:39,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393409680] [2024-11-22 04:03:39,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393409680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:39,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:39,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:03:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214667615] [2024-11-22 04:03:39,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:39,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:03:39,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:03:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:03:39,076 INFO L87 Difference]: Start difference. First operand 72342 states and 167361 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)