./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.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 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:18:23,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:18:23,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:18:23,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:18:23,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:18:23,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:18:23,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:18:23,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:18:23,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:18:23,345 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:18:23,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:18:23,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:18:23,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:18:23,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:18:23,347 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:18:23,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:18:23,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:18:23,347 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:18:23,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:18:23,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:18:23,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:18:23,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:18:23,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:18:23,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:18:23,351 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:18:23,351 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:18:23,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:18:23,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:18:23,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:18:23,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:18:23,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:18:23,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:18:23,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:18:23,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:18:23,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:18:23,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:18:23,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:18:23,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:18:23,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:18:23,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:18:23,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:18:23,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:18:23,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 [2024-11-18 16:18:23,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:18:23,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:18:23,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:18:23,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:18:23,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:18:23,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-11-18 16:18:25,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:18:25,434 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:18:25,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-11-18 16:18:25,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5251d0246/dc45d118ba2a483b9c0b787f79640d3b/FLAGa02fff75c [2024-11-18 16:18:25,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5251d0246/dc45d118ba2a483b9c0b787f79640d3b [2024-11-18 16:18:25,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:18:25,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:18:25,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:18:25,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:18:25,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:18:25,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ffbe12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25, skipping insertion in model container [2024-11-18 16:18:25,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,869 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:18:26,050 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_2.cil-1+token_ring.06.cil-1.c[914,927] [2024-11-18 16:18:26,127 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_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2024-11-18 16:18:26,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:18:26,243 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:18:26,256 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_2.cil-1+token_ring.06.cil-1.c[914,927] [2024-11-18 16:18:26,282 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_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2024-11-18 16:18:26,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:18:26,351 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:18:26,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26 WrapperNode [2024-11-18 16:18:26,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:18:26,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:18:26,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:18:26,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:18:26,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,479 INFO L138 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 714 [2024-11-18 16:18:26,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:18:26,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:18:26,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:18:26,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:18:26,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,519 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]. [2024-11-18 16:18:26,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:18:26,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:18:26,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:18:26,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:18:26,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (1/1) ... [2024-11-18 16:18:26,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:18:26,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:18:26,613 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) [2024-11-18 16:18:26,617 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 [2024-11-18 16:18:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:18:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:18:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:18:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:18:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:18:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:18:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:18:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:18:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:18:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:18:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:18:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:18:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:18:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:18:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:18:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:18:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:18:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:18:26,672 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:18:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:18:26,672 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:18:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:18:26,672 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:18:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:18:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:18:26,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:18:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:18:26,673 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:18:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:18:26,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:18:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:18:26,673 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:18:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:18:26,676 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:18:26,812 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:18:26,815 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:18:27,569 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2024-11-18 16:18:27,570 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:18:27,599 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:18:27,599 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-18 16:18:27,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27 BoogieIcfgContainer [2024-11-18 16:18:27,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:18:27,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:18:27,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:18:27,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:18:27,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:18:25" (1/3) ... [2024-11-18 16:18:27,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cd542f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:27, skipping insertion in model container [2024-11-18 16:18:27,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26" (2/3) ... [2024-11-18 16:18:27,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cd542f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:27, skipping insertion in model container [2024-11-18 16:18:27,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27" (3/3) ... [2024-11-18 16:18:27,614 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-11-18 16:18:27,631 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:18:27,631 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:18:27,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:18:27,718 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;@2028663e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:18:27,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:18:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 294 states have (on average 1.598639455782313) internal successors, (470), 302 states have internal predecessors, (470), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 16:18:27,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:27,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:27,740 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] [2024-11-18 16:18:27,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:27,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1937150767, now seen corresponding path program 1 times [2024-11-18 16:18:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:27,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063262595] [2024-11-18 16:18:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:27,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:28,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063262595] [2024-11-18 16:18:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063262595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:28,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:28,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597661179] [2024-11-18 16:18:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:28,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:28,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:28,302 INFO L87 Difference]: Start difference. First operand has 348 states, 294 states have (on average 1.598639455782313) internal successors, (470), 302 states have internal predecessors, (470), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:29,116 INFO L93 Difference]: Finished difference Result 776 states and 1208 transitions. [2024-11-18 16:18:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:18:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:29,136 INFO L225 Difference]: With dead ends: 776 [2024-11-18 16:18:29,137 INFO L226 Difference]: Without dead ends: 440 [2024-11-18 16:18:29,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:29,153 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 361 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:29,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1130 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-18 16:18:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 433. [2024-11-18 16:18:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 362 states have (on average 1.4834254143646408) internal successors, (537), 369 states have internal predecessors, (537), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-18 16:18:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 632 transitions. [2024-11-18 16:18:29,253 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 632 transitions. Word has length 65 [2024-11-18 16:18:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:29,255 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 632 transitions. [2024-11-18 16:18:29,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 632 transitions. [2024-11-18 16:18:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:29,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:29,260 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] [2024-11-18 16:18:29,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:18:29,261 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:29,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -258262127, now seen corresponding path program 1 times [2024-11-18 16:18:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462455206] [2024-11-18 16:18:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:29,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462455206] [2024-11-18 16:18:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462455206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:29,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:29,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652725216] [2024-11-18 16:18:29,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:29,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:29,558 INFO L87 Difference]: Start difference. First operand 433 states and 632 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:30,347 INFO L93 Difference]: Finished difference Result 750 states and 1063 transitions. [2024-11-18 16:18:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:18:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:30,354 INFO L225 Difference]: With dead ends: 750 [2024-11-18 16:18:30,354 INFO L226 Difference]: Without dead ends: 573 [2024-11-18 16:18:30,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:30,356 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 720 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:30,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1332 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-18 16:18:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 529. [2024-11-18 16:18:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 438 states have (on average 1.4634703196347032) internal successors, (641), 447 states have internal predecessors, (641), 58 states have call successors, (58), 29 states have call predecessors, (58), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2024-11-18 16:18:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 766 transitions. [2024-11-18 16:18:30,455 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 766 transitions. Word has length 65 [2024-11-18 16:18:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:30,456 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 766 transitions. [2024-11-18 16:18:30,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 766 transitions. [2024-11-18 16:18:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:30,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:30,465 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] [2024-11-18 16:18:30,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:18:30,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:30,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2008119059, now seen corresponding path program 1 times [2024-11-18 16:18:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026265922] [2024-11-18 16:18:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026265922] [2024-11-18 16:18:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026265922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:30,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:30,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:30,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966102131] [2024-11-18 16:18:30,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:30,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:30,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:30,616 INFO L87 Difference]: Start difference. First operand 529 states and 766 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:18:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:31,378 INFO L93 Difference]: Finished difference Result 2533 states and 3541 transitions. [2024-11-18 16:18:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:31,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-11-18 16:18:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:31,400 INFO L225 Difference]: With dead ends: 2533 [2024-11-18 16:18:31,400 INFO L226 Difference]: Without dead ends: 2266 [2024-11-18 16:18:31,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:18:31,405 INFO L432 NwaCegarLoop]: 717 mSDtfsCounter, 1568 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:31,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 2097 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:18:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2024-11-18 16:18:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2109. [2024-11-18 16:18:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 1681 states have (on average 1.3646638905413444) internal successors, (2294), 1718 states have internal predecessors, (2294), 223 states have call successors, (223), 173 states have call predecessors, (223), 203 states have return successors, (333), 221 states have call predecessors, (333), 219 states have call successors, (333) [2024-11-18 16:18:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2850 transitions. [2024-11-18 16:18:31,576 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2850 transitions. Word has length 65 [2024-11-18 16:18:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:31,577 INFO L471 AbstractCegarLoop]: Abstraction has 2109 states and 2850 transitions. [2024-11-18 16:18:31,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:18:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2850 transitions. [2024-11-18 16:18:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:31,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:31,580 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] [2024-11-18 16:18:31,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:18:31,580 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:31,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1235399148, now seen corresponding path program 1 times [2024-11-18 16:18:31,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:31,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10940189] [2024-11-18 16:18:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:31,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10940189] [2024-11-18 16:18:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10940189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002624038] [2024-11-18 16:18:31,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:31,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:31,692 INFO L87 Difference]: Start difference. First operand 2109 states and 2850 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:31,832 INFO L93 Difference]: Finished difference Result 4001 states and 5409 transitions. [2024-11-18 16:18:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:31,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 16:18:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:31,847 INFO L225 Difference]: With dead ends: 4001 [2024-11-18 16:18:31,847 INFO L226 Difference]: Without dead ends: 2154 [2024-11-18 16:18:31,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:31,855 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 0 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:31,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2024-11-18 16:18:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2154. [2024-11-18 16:18:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 1717 states have (on average 1.3482818870122306) internal successors, (2315), 1754 states have internal predecessors, (2315), 223 states have call successors, (223), 173 states have call predecessors, (223), 212 states have return successors, (351), 230 states have call predecessors, (351), 219 states have call successors, (351) [2024-11-18 16:18:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2889 transitions. [2024-11-18 16:18:32,005 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2889 transitions. Word has length 65 [2024-11-18 16:18:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:32,006 INFO L471 AbstractCegarLoop]: Abstraction has 2154 states and 2889 transitions. [2024-11-18 16:18:32,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2889 transitions. [2024-11-18 16:18:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:32,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:32,008 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] [2024-11-18 16:18:32,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:18:32,009 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:32,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash 150804246, now seen corresponding path program 1 times [2024-11-18 16:18:32,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:32,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119620523] [2024-11-18 16:18:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119620523] [2024-11-18 16:18:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119620523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:32,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363652330] [2024-11-18 16:18:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:32,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:32,195 INFO L87 Difference]: Start difference. First operand 2154 states and 2889 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:33,054 INFO L93 Difference]: Finished difference Result 3904 states and 5148 transitions. [2024-11-18 16:18:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 16:18:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:18:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:33,069 INFO L225 Difference]: With dead ends: 3904 [2024-11-18 16:18:33,070 INFO L226 Difference]: Without dead ends: 2371 [2024-11-18 16:18:33,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:18:33,075 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 731 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:33,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1122 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2024-11-18 16:18:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2169. [2024-11-18 16:18:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1733 states have (on average 1.341604154645124) internal successors, (2325), 1765 states have internal predecessors, (2325), 224 states have call successors, (224), 174 states have call predecessors, (224), 210 states have return successors, (336), 233 states have call predecessors, (336), 220 states have call successors, (336) [2024-11-18 16:18:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2885 transitions. [2024-11-18 16:18:33,233 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2885 transitions. Word has length 65 [2024-11-18 16:18:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:33,234 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 2885 transitions. [2024-11-18 16:18:33,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2885 transitions. [2024-11-18 16:18:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:33,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:33,236 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] [2024-11-18 16:18:33,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:18:33,237 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:33,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash 16790740, now seen corresponding path program 1 times [2024-11-18 16:18:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193506794] [2024-11-18 16:18:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:33,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193506794] [2024-11-18 16:18:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193506794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:33,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551963387] [2024-11-18 16:18:33,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:33,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:33,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:33,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:33,306 INFO L87 Difference]: Start difference. First operand 2169 states and 2885 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, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:33,906 INFO L93 Difference]: Finished difference Result 6016 states and 7988 transitions. [2024-11-18 16:18:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:18:33,907 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, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:18:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:33,934 INFO L225 Difference]: With dead ends: 6016 [2024-11-18 16:18:33,934 INFO L226 Difference]: Without dead ends: 4112 [2024-11-18 16:18:33,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:33,943 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 680 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:33,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 576 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:18:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2024-11-18 16:18:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4108. [2024-11-18 16:18:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 3221 states have (on average 1.2946289972058367) internal successors, (4170), 3296 states have internal predecessors, (4170), 445 states have call successors, (445), 340 states have call predecessors, (445), 440 states have return successors, (801), 478 states have call predecessors, (801), 441 states have call successors, (801) [2024-11-18 16:18:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5416 transitions. [2024-11-18 16:18:34,226 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5416 transitions. Word has length 65 [2024-11-18 16:18:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:34,226 INFO L471 AbstractCegarLoop]: Abstraction has 4108 states and 5416 transitions. [2024-11-18 16:18:34,227 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, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5416 transitions. [2024-11-18 16:18:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:18:34,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:34,229 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] [2024-11-18 16:18:34,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:18:34,230 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:34,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:34,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1203450812, now seen corresponding path program 1 times [2024-11-18 16:18:34,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:34,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288371756] [2024-11-18 16:18:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:34,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288371756] [2024-11-18 16:18:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288371756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:34,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309189013] [2024-11-18 16:18:34,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:34,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:34,266 INFO L87 Difference]: Start difference. First operand 4108 states and 5416 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:34,703 INFO L93 Difference]: Finished difference Result 10445 states and 13827 transitions. [2024-11-18 16:18:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:34,703 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-18 16:18:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:34,752 INFO L225 Difference]: With dead ends: 10445 [2024-11-18 16:18:34,752 INFO L226 Difference]: Without dead ends: 6581 [2024-11-18 16:18:34,768 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 [2024-11-18 16:18:34,769 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 103 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:34,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 975 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:34,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2024-11-18 16:18:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 6447. [2024-11-18 16:18:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6447 states, 5001 states have (on average 1.2823435312937412) internal successors, (6413), 5099 states have internal predecessors, (6413), 718 states have call successors, (718), 572 states have call predecessors, (718), 726 states have return successors, (1308), 782 states have call predecessors, (1308), 714 states have call successors, (1308) [2024-11-18 16:18:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 8439 transitions. [2024-11-18 16:18:35,295 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 8439 transitions. Word has length 66 [2024-11-18 16:18:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:35,295 INFO L471 AbstractCegarLoop]: Abstraction has 6447 states and 8439 transitions. [2024-11-18 16:18:35,296 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 8439 transitions. [2024-11-18 16:18:35,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:18:35,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:35,300 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:35,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:18:35,302 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:35,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 503586546, now seen corresponding path program 1 times [2024-11-18 16:18:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:35,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509225971] [2024-11-18 16:18:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:35,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:35,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509225971] [2024-11-18 16:18:35,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509225971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:35,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:35,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:35,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610015370] [2024-11-18 16:18:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:35,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:35,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:35,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:35,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:35,396 INFO L87 Difference]: Start difference. First operand 6447 states and 8439 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:36,044 INFO L93 Difference]: Finished difference Result 7629 states and 9908 transitions. [2024-11-18 16:18:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:36,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-18 16:18:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:36,093 INFO L225 Difference]: With dead ends: 7629 [2024-11-18 16:18:36,093 INFO L226 Difference]: Without dead ends: 7626 [2024-11-18 16:18:36,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:36,100 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 928 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:36,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 599 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:18:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2024-11-18 16:18:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 7524. [2024-11-18 16:18:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5819 states have (on average 1.273758377728132) internal successors, (7412), 5927 states have internal predecessors, (7412), 849 states have call successors, (849), 686 states have call predecessors, (849), 854 states have return successors, (1516), 917 states have call predecessors, (1516), 846 states have call successors, (1516) [2024-11-18 16:18:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 9777 transitions. [2024-11-18 16:18:36,943 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 9777 transitions. Word has length 73 [2024-11-18 16:18:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:36,947 INFO L471 AbstractCegarLoop]: Abstraction has 7524 states and 9777 transitions. [2024-11-18 16:18:36,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 9777 transitions. [2024-11-18 16:18:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:18:36,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:36,951 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:36,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:18:36,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:36,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1569714267, now seen corresponding path program 1 times [2024-11-18 16:18:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:36,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377725989] [2024-11-18 16:18:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377725989] [2024-11-18 16:18:37,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377725989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:18:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660561879] [2024-11-18 16:18:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:37,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:18:37,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:18:37,107 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) [2024-11-18 16:18:37,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:18:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:37,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:18:37,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:18:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:37,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:18:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660561879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:18:37,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:18:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-18 16:18:37,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097850641] [2024-11-18 16:18:37,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:18:37,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:18:37,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:18:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:37,720 INFO L87 Difference]: Start difference. First operand 7524 states and 9777 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:18:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:39,046 INFO L93 Difference]: Finished difference Result 15861 states and 20439 transitions. [2024-11-18 16:18:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:18:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-18 16:18:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:39,170 INFO L225 Difference]: With dead ends: 15861 [2024-11-18 16:18:39,170 INFO L226 Difference]: Without dead ends: 15858 [2024-11-18 16:18:39,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:39,183 INFO L432 NwaCegarLoop]: 690 mSDtfsCounter, 880 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:39,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 2067 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15858 states. [2024-11-18 16:18:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15858 to 14469. [2024-11-18 16:18:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14469 states, 11181 states have (on average 1.2683123155352831) internal successors, (14181), 11386 states have internal predecessors, (14181), 1615 states have call successors, (1615), 1320 states have call predecessors, (1615), 1671 states have return successors, (2925), 1769 states have call predecessors, (2925), 1612 states have call successors, (2925) [2024-11-18 16:18:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14469 states to 14469 states and 18721 transitions. [2024-11-18 16:18:40,954 INFO L78 Accepts]: Start accepts. Automaton has 14469 states and 18721 transitions. Word has length 74 [2024-11-18 16:18:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:40,955 INFO L471 AbstractCegarLoop]: Abstraction has 14469 states and 18721 transitions. [2024-11-18 16:18:40,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:18:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 14469 states and 18721 transitions. [2024-11-18 16:18:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:18:40,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:40,959 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:40,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 16:18:41,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:18:41,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:41,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash -972919246, now seen corresponding path program 2 times [2024-11-18 16:18:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:41,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828100123] [2024-11-18 16:18:41,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 16:18:41,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:41,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 16:18:41,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 16:18:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828100123] [2024-11-18 16:18:41,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828100123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:41,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:41,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:41,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197082686] [2024-11-18 16:18:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:41,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:41,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:41,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:41,209 INFO L87 Difference]: Start difference. First operand 14469 states and 18721 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:42,023 INFO L93 Difference]: Finished difference Result 21594 states and 28002 transitions. [2024-11-18 16:18:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:42,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-18 16:18:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:42,075 INFO L225 Difference]: With dead ends: 21594 [2024-11-18 16:18:42,076 INFO L226 Difference]: Without dead ends: 8290 [2024-11-18 16:18:42,116 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 [2024-11-18 16:18:42,117 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 468 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:42,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 695 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8290 states. [2024-11-18 16:18:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8290 to 8192. [2024-11-18 16:18:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 6359 states have (on average 1.2453215914451958) internal successors, (7919), 6461 states have internal predecessors, (7919), 918 states have call successors, (918), 742 states have call predecessors, (918), 913 states have return successors, (1530), 995 states have call predecessors, (1530), 915 states have call successors, (1530) [2024-11-18 16:18:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 10367 transitions. [2024-11-18 16:18:42,781 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 10367 transitions. Word has length 77 [2024-11-18 16:18:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:42,782 INFO L471 AbstractCegarLoop]: Abstraction has 8192 states and 10367 transitions. [2024-11-18 16:18:42,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 10367 transitions. [2024-11-18 16:18:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 16:18:42,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:42,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:42,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:18:42,788 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:42,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1272990263, now seen corresponding path program 1 times [2024-11-18 16:18:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447897769] [2024-11-18 16:18:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:18:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447897769] [2024-11-18 16:18:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447897769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785326707] [2024-11-18 16:18:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:42,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:42,930 INFO L87 Difference]: Start difference. First operand 8192 states and 10367 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:45,025 INFO L93 Difference]: Finished difference Result 24319 states and 30865 transitions. [2024-11-18 16:18:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 16:18:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-18 16:18:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:45,120 INFO L225 Difference]: With dead ends: 24319 [2024-11-18 16:18:45,120 INFO L226 Difference]: Without dead ends: 16395 [2024-11-18 16:18:45,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 16:18:45,154 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 648 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:45,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1515 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:18:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16395 states. [2024-11-18 16:18:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16395 to 15312. [2024-11-18 16:18:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15312 states, 11774 states have (on average 1.2180227620180057) internal successors, (14341), 11967 states have internal predecessors, (14341), 1759 states have call successors, (1759), 1428 states have call predecessors, (1759), 1777 states have return successors, (3196), 1929 states have call predecessors, (3196), 1756 states have call successors, (3196) [2024-11-18 16:18:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15312 states to 15312 states and 19296 transitions. [2024-11-18 16:18:46,775 INFO L78 Accepts]: Start accepts. Automaton has 15312 states and 19296 transitions. Word has length 84 [2024-11-18 16:18:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:46,776 INFO L471 AbstractCegarLoop]: Abstraction has 15312 states and 19296 transitions. [2024-11-18 16:18:46,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:46,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15312 states and 19296 transitions. [2024-11-18 16:18:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 16:18:46,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:46,786 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:46,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:18:46,787 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:46,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1493425648, now seen corresponding path program 1 times [2024-11-18 16:18:46,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:46,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740638346] [2024-11-18 16:18:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:46,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:18:46,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:46,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740638346] [2024-11-18 16:18:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740638346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:46,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:46,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:18:46,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620707118] [2024-11-18 16:18:46,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:46,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:18:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:18:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:46,915 INFO L87 Difference]: Start difference. First operand 15312 states and 19296 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:48,942 INFO L93 Difference]: Finished difference Result 30540 states and 38395 transitions. [2024-11-18 16:18:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:18:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-18 16:18:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:49,051 INFO L225 Difference]: With dead ends: 30540 [2024-11-18 16:18:49,052 INFO L226 Difference]: Without dead ends: 16401 [2024-11-18 16:18:49,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 16:18:49,102 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 1336 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:49,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 1592 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 16:18:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16401 states. [2024-11-18 16:18:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16401 to 15312. [2024-11-18 16:18:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15312 states, 11774 states have (on average 1.2003567181926278) internal successors, (14133), 11967 states have internal predecessors, (14133), 1759 states have call successors, (1759), 1428 states have call predecessors, (1759), 1777 states have return successors, (2991), 1929 states have call predecessors, (2991), 1756 states have call successors, (2991) [2024-11-18 16:18:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15312 states to 15312 states and 18883 transitions. [2024-11-18 16:18:50,473 INFO L78 Accepts]: Start accepts. Automaton has 15312 states and 18883 transitions. Word has length 93 [2024-11-18 16:18:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:50,474 INFO L471 AbstractCegarLoop]: Abstraction has 15312 states and 18883 transitions. [2024-11-18 16:18:50,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 15312 states and 18883 transitions. [2024-11-18 16:18:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:18:50,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:50,486 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:50,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:18:50,486 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:50,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1849447866, now seen corresponding path program 1 times [2024-11-18 16:18:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:50,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917731419] [2024-11-18 16:18:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:50,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:50,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917731419] [2024-11-18 16:18:50,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917731419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:50,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:50,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854076149] [2024-11-18 16:18:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:50,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:50,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:50,539 INFO L87 Difference]: Start difference. First operand 15312 states and 18883 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:51,624 INFO L93 Difference]: Finished difference Result 15541 states and 19231 transitions. [2024-11-18 16:18:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:51,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-18 16:18:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:51,720 INFO L225 Difference]: With dead ends: 15541 [2024-11-18 16:18:51,721 INFO L226 Difference]: Without dead ends: 15312 [2024-11-18 16:18:51,737 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 [2024-11-18 16:18:51,739 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 356 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:51,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 626 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2024-11-18 16:18:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 15312. [2024-11-18 16:18:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15312 states, 11774 states have (on average 1.2002717852896212) internal successors, (14132), 11967 states have internal predecessors, (14132), 1759 states have call successors, (1759), 1428 states have call predecessors, (1759), 1777 states have return successors, (2991), 1929 states have call predecessors, (2991), 1756 states have call successors, (2991) [2024-11-18 16:18:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15312 states to 15312 states and 18882 transitions. [2024-11-18 16:18:53,248 INFO L78 Accepts]: Start accepts. Automaton has 15312 states and 18882 transitions. Word has length 113 [2024-11-18 16:18:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:53,249 INFO L471 AbstractCegarLoop]: Abstraction has 15312 states and 18882 transitions. [2024-11-18 16:18:53,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 15312 states and 18882 transitions. [2024-11-18 16:18:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:18:53,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:53,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:53,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:18:53,264 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:53,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:53,264 INFO L85 PathProgramCache]: Analyzing trace with hash 818406968, now seen corresponding path program 1 times [2024-11-18 16:18:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:53,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11400945] [2024-11-18 16:18:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11400945] [2024-11-18 16:18:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11400945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:53,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603414214] [2024-11-18 16:18:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:53,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:53,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:53,417 INFO L87 Difference]: Start difference. First operand 15312 states and 18882 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:18:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:55,477 INFO L93 Difference]: Finished difference Result 15806 states and 19657 transitions. [2024-11-18 16:18:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:55,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:18:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:55,555 INFO L225 Difference]: With dead ends: 15806 [2024-11-18 16:18:55,556 INFO L226 Difference]: Without dead ends: 15579 [2024-11-18 16:18:55,567 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 [2024-11-18 16:18:55,567 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 825 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:55,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2256 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15579 states. [2024-11-18 16:18:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15579 to 15547. [2024-11-18 16:18:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15547 states, 11984 states have (on average 1.2066088117489986) internal successors, (14460), 12179 states have internal predecessors, (14460), 1776 states have call successors, (1776), 1434 states have call predecessors, (1776), 1785 states have return successors, (3015), 1947 states have call predecessors, (3015), 1773 states have call successors, (3015) [2024-11-18 16:18:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15547 states to 15547 states and 19251 transitions. [2024-11-18 16:18:56,815 INFO L78 Accepts]: Start accepts. Automaton has 15547 states and 19251 transitions. Word has length 113 [2024-11-18 16:18:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:56,815 INFO L471 AbstractCegarLoop]: Abstraction has 15547 states and 19251 transitions. [2024-11-18 16:18:56,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:18:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15547 states and 19251 transitions. [2024-11-18 16:18:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:18:56,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:56,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:56,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:18:56,830 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:56,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2125175110, now seen corresponding path program 1 times [2024-11-18 16:18:56,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:56,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403957580] [2024-11-18 16:18:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403957580] [2024-11-18 16:18:56,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403957580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:56,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:56,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674699827] [2024-11-18 16:18:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:56,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:56,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:56,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:56,969 INFO L87 Difference]: Start difference. First operand 15547 states and 19251 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:18:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:58,569 INFO L93 Difference]: Finished difference Result 16510 states and 20763 transitions. [2024-11-18 16:18:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:58,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:18:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:58,638 INFO L225 Difference]: With dead ends: 16510 [2024-11-18 16:18:58,639 INFO L226 Difference]: Without dead ends: 16050 [2024-11-18 16:18:58,649 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 [2024-11-18 16:18:58,650 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 821 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:58,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2052 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16050 states. [2024-11-18 16:18:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16050 to 16007. [2024-11-18 16:18:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16007 states, 12398 states have (on average 1.2181803516696241) internal successors, (15103), 12597 states have internal predecessors, (15103), 1806 states have call successors, (1806), 1446 states have call predecessors, (1806), 1801 states have return successors, (3061), 1979 states have call predecessors, (3061), 1803 states have call successors, (3061) [2024-11-18 16:18:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16007 states to 16007 states and 19970 transitions. [2024-11-18 16:18:59,887 INFO L78 Accepts]: Start accepts. Automaton has 16007 states and 19970 transitions. Word has length 113 [2024-11-18 16:18:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:59,887 INFO L471 AbstractCegarLoop]: Abstraction has 16007 states and 19970 transitions. [2024-11-18 16:18:59,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:18:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 16007 states and 19970 transitions. [2024-11-18 16:18:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:18:59,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:59,900 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:59,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:18:59,900 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:59,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 550817272, now seen corresponding path program 1 times [2024-11-18 16:18:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870433692] [2024-11-18 16:18:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:00,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870433692] [2024-11-18 16:19:00,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870433692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:00,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:00,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715906143] [2024-11-18 16:19:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:00,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:00,025 INFO L87 Difference]: Start difference. First operand 16007 states and 19970 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:02,180 INFO L93 Difference]: Finished difference Result 17979 states and 23104 transitions. [2024-11-18 16:19:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:02,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:19:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:02,273 INFO L225 Difference]: With dead ends: 17979 [2024-11-18 16:19:02,274 INFO L226 Difference]: Without dead ends: 17059 [2024-11-18 16:19:02,289 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 [2024-11-18 16:19:02,290 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 815 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:02,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 2219 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17059 states. [2024-11-18 16:19:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17059 to 16995. [2024-11-18 16:19:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16995 states, 13288 states have (on average 1.242098133654425) internal successors, (16505), 13501 states have internal predecessors, (16505), 1866 states have call successors, (1866), 1470 states have call predecessors, (1866), 1839 states have return successors, (3177), 2043 states have call predecessors, (3177), 1863 states have call successors, (3177) [2024-11-18 16:19:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16995 states to 16995 states and 21548 transitions. [2024-11-18 16:19:03,766 INFO L78 Accepts]: Start accepts. Automaton has 16995 states and 21548 transitions. Word has length 113 [2024-11-18 16:19:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:03,766 INFO L471 AbstractCegarLoop]: Abstraction has 16995 states and 21548 transitions. [2024-11-18 16:19:03,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 16995 states and 21548 transitions. [2024-11-18 16:19:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:19:03,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:03,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:03,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:19:03,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:03,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -332691718, now seen corresponding path program 1 times [2024-11-18 16:19:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833386947] [2024-11-18 16:19:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833386947] [2024-11-18 16:19:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833386947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:03,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526186580] [2024-11-18 16:19:03,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:03,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:03,898 INFO L87 Difference]: Start difference. First operand 16995 states and 21548 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:05,650 INFO L93 Difference]: Finished difference Result 21170 states and 28334 transitions. [2024-11-18 16:19:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:19:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:05,745 INFO L225 Difference]: With dead ends: 21170 [2024-11-18 16:19:05,745 INFO L226 Difference]: Without dead ends: 19262 [2024-11-18 16:19:05,765 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 [2024-11-18 16:19:05,766 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 810 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:05,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2210 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:19:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19262 states. [2024-11-18 16:19:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19262 to 19159. [2024-11-18 16:19:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19159 states, 15238 states have (on average 1.2880299251870324) internal successors, (19627), 15497 states have internal predecessors, (19627), 1986 states have call successors, (1986), 1518 states have call predecessors, (1986), 1933 states have return successors, (3505), 2171 states have call predecessors, (3505), 1983 states have call successors, (3505) [2024-11-18 16:19:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19159 states to 19159 states and 25118 transitions. [2024-11-18 16:19:07,280 INFO L78 Accepts]: Start accepts. Automaton has 19159 states and 25118 transitions. Word has length 113 [2024-11-18 16:19:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:07,281 INFO L471 AbstractCegarLoop]: Abstraction has 19159 states and 25118 transitions. [2024-11-18 16:19:07,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 19159 states and 25118 transitions. [2024-11-18 16:19:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:19:07,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:07,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:07,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:19:07,297 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:07,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash -361192008, now seen corresponding path program 1 times [2024-11-18 16:19:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:07,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405658388] [2024-11-18 16:19:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:07,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:07,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405658388] [2024-11-18 16:19:07,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405658388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:07,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:07,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035442444] [2024-11-18 16:19:07,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:07,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:07,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:07,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:07,415 INFO L87 Difference]: Start difference. First operand 19159 states and 25118 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:09,650 INFO L93 Difference]: Finished difference Result 28245 states and 40432 transitions. [2024-11-18 16:19:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:19:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:09,772 INFO L225 Difference]: With dead ends: 28245 [2024-11-18 16:19:09,772 INFO L226 Difference]: Without dead ends: 24173 [2024-11-18 16:19:09,796 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 [2024-11-18 16:19:09,797 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 805 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:09,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2198 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24173 states. [2024-11-18 16:19:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24173 to 23999. [2024-11-18 16:19:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23999 states, 19596 states have (on average 1.363798734435599) internal successors, (26725), 20001 states have internal predecessors, (26725), 2226 states have call successors, (2226), 1614 states have call predecessors, (2226), 2175 states have return successors, (4545), 2427 states have call predecessors, (4545), 2223 states have call successors, (4545) [2024-11-18 16:19:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23999 states to 23999 states and 33496 transitions. [2024-11-18 16:19:11,648 INFO L78 Accepts]: Start accepts. Automaton has 23999 states and 33496 transitions. Word has length 113 [2024-11-18 16:19:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:11,648 INFO L471 AbstractCegarLoop]: Abstraction has 23999 states and 33496 transitions. [2024-11-18 16:19:11,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 23999 states and 33496 transitions. [2024-11-18 16:19:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:19:11,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:11,665 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:11,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:19:11,666 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:11,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1993193274, now seen corresponding path program 1 times [2024-11-18 16:19:11,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:11,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358368029] [2024-11-18 16:19:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:11,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:11,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358368029] [2024-11-18 16:19:11,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358368029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:11,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:11,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993061162] [2024-11-18 16:19:11,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:11,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:11,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:11,783 INFO L87 Difference]: Start difference. First operand 23999 states and 33496 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:14,671 INFO L93 Difference]: Finished difference Result 44268 states and 69622 transitions. [2024-11-18 16:19:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:19:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:14,843 INFO L225 Difference]: With dead ends: 44268 [2024-11-18 16:19:14,843 INFO L226 Difference]: Without dead ends: 35356 [2024-11-18 16:19:14,887 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 [2024-11-18 16:19:14,888 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 800 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:14,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2182 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:19:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35356 states. [2024-11-18 16:19:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35356 to 35055. [2024-11-18 16:19:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35055 states, 29526 states have (on average 1.4621350673982252) internal successors, (43171), 30385 states have internal predecessors, (43171), 2706 states have call successors, (2706), 1806 states have call predecessors, (2706), 2821 states have return successors, (8161), 2939 states have call predecessors, (8161), 2703 states have call successors, (8161) [2024-11-18 16:19:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35055 states to 35055 states and 54038 transitions. [2024-11-18 16:19:17,597 INFO L78 Accepts]: Start accepts. Automaton has 35055 states and 54038 transitions. Word has length 113 [2024-11-18 16:19:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:17,597 INFO L471 AbstractCegarLoop]: Abstraction has 35055 states and 54038 transitions. [2024-11-18 16:19:17,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35055 states and 54038 transitions. [2024-11-18 16:19:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 16:19:17,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:17,616 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:17,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:19:17,617 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:17,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash -424710792, now seen corresponding path program 1 times [2024-11-18 16:19:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:17,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011940713] [2024-11-18 16:19:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011940713] [2024-11-18 16:19:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011940713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:17,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:17,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961235976] [2024-11-18 16:19:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:17,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:17,761 INFO L87 Difference]: Start difference. First operand 35055 states and 54038 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-18 16:19:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:21,923 INFO L93 Difference]: Finished difference Result 84311 states and 148213 transitions. [2024-11-18 16:19:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2024-11-18 16:19:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:22,259 INFO L225 Difference]: With dead ends: 84311 [2024-11-18 16:19:22,259 INFO L226 Difference]: Without dead ends: 64343 [2024-11-18 16:19:22,333 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 [2024-11-18 16:19:22,333 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 858 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:22,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 2148 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64343 states.