./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.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.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:18:12,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:18:12,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:18:12,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:18:12,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:18:12,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:18:12,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:18:12,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:18:12,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:18:12,259 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:18:12,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:18:12,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:18:12,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:18:12,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:18:12,260 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:18:12,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:18:12,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:18:12,262 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:18:12,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:18:12,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:18:12,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:18:12,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:18:12,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:18:12,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:18:12,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:18:12,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:18:12,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:18:12,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:18:12,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:18:12,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:18:12,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:18:12,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:18:12,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:18:12,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:18:12,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:18:12,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:18:12,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:18:12,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:18:12,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:18:12,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:18:12,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:18:12,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:18:12,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 [2024-11-18 16:18:12,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:18:12,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:18:12,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:18:12,600 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:18:12,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:18:12,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-18 16:18:14,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:18:14,413 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:18:14,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-18 16:18:14,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb58874f/ec0790b1aa4f48eeabf008cfeb17127e/FLAGe12dffd12 [2024-11-18 16:18:14,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb58874f/ec0790b1aa4f48eeabf008cfeb17127e [2024-11-18 16:18:14,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:18:14,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:18:14,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:18:14,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:18:14,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:18:14,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:14" (1/1) ... [2024-11-18 16:18:14,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc94058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:14, skipping insertion in model container [2024-11-18 16:18:14,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:14" (1/1) ... [2024-11-18 16:18:14,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:18:15,030 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.04.cil-2.c[914,927] [2024-11-18 16:18:15,082 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.04.cil-2.c[7115,7128] [2024-11-18 16:18:15,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:18:15,163 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:18:15,178 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.04.cil-2.c[914,927] [2024-11-18 16:18:15,215 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.04.cil-2.c[7115,7128] [2024-11-18 16:18:15,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:18:15,301 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:18:15,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15 WrapperNode [2024-11-18 16:18:15,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:18:15,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:18:15,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:18:15,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:18:15,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,386 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 594 [2024-11-18 16:18:15,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:18:15,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:18:15,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:18:15,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:18:15,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,444 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 16:18:15,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:18:15,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:18:15,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:18:15,488 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:18:15,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (1/1) ... [2024-11-18 16:18:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:18:15,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:18:15,551 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 16:18:15,555 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 16:18:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:18:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:18:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:18:15,611 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:18:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:18:15,613 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:18:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:18:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:18:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:18:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:18:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:18:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:18:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:18:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:18:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:18:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:18:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:18:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:18:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:18:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:18:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:18:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:18:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:18:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:18:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:18:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:18:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:18:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:18:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:18:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:18:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:18:15,617 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:18:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:18:15,617 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:18:15,716 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:18:15,718 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:18:16,501 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-18 16:18:16,501 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:18:16,535 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:18:16,535 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-18 16:18:16,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:16 BoogieIcfgContainer [2024-11-18 16:18:16,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:18:16,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:18:16,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:18:16,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:18:16,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:18:14" (1/3) ... [2024-11-18 16:18:16,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520952a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:16, skipping insertion in model container [2024-11-18 16:18:16,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:15" (2/3) ... [2024-11-18 16:18:16,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520952a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:16, skipping insertion in model container [2024-11-18 16:18:16,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:16" (3/3) ... [2024-11-18 16:18:16,545 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-18 16:18:16,567 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:18:16,568 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:18:16,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:18:16,668 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;@656db641, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:18:16,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:18:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 252 states have internal predecessors, (386), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 16:18:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:16,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:16,692 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 16:18:16,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:16,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash -644842896, now seen corresponding path program 1 times [2024-11-18 16:18:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256194872] [2024-11-18 16:18:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:17,311 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 16:18:17,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:17,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256194872] [2024-11-18 16:18:17,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256194872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:17,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:17,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254941797] [2024-11-18 16:18:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:17,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:17,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:17,357 INFO L87 Difference]: Start difference. First operand has 296 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 252 states have internal predecessors, (386), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) 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 16:18:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:18,523 INFO L93 Difference]: Finished difference Result 713 states and 1090 transitions. [2024-11-18 16:18:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:18,529 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 16:18:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:18,544 INFO L225 Difference]: With dead ends: 713 [2024-11-18 16:18:18,544 INFO L226 Difference]: Without dead ends: 427 [2024-11-18 16:18:18,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:18,557 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 606 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:18,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1232 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 16:18:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-18 16:18:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 385. [2024-11-18 16:18:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 315 states have (on average 1.4730158730158731) internal successors, (464), 323 states have internal predecessors, (464), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2024-11-18 16:18:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 561 transitions. [2024-11-18 16:18:18,650 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 561 transitions. Word has length 65 [2024-11-18 16:18:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:18,651 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 561 transitions. [2024-11-18 16:18:18,651 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 16:18:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 561 transitions. [2024-11-18 16:18:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:18,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:18,656 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 16:18:18,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:18:18,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:18,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1621538290, now seen corresponding path program 1 times [2024-11-18 16:18:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:18,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173940703] [2024-11-18 16:18:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:18,833 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 16:18:18,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173940703] [2024-11-18 16:18:18,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173940703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:18,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:18,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919236935] [2024-11-18 16:18:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:18,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:18,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:18,842 INFO L87 Difference]: Start difference. First operand 385 states and 561 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 16:18:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:18,892 INFO L93 Difference]: Finished difference Result 576 states and 826 transitions. [2024-11-18 16:18:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:18,893 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 16:18:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:18,897 INFO L225 Difference]: With dead ends: 576 [2024-11-18 16:18:18,897 INFO L226 Difference]: Without dead ends: 395 [2024-11-18 16:18:18,899 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 16:18:18,900 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 0 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2060 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 16:18:18,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2060 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-18 16:18:18,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-18 16:18:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 323 states have (on average 1.4613003095975232) internal successors, (472), 331 states have internal predecessors, (472), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2024-11-18 16:18:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 571 transitions. [2024-11-18 16:18:18,941 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 571 transitions. Word has length 65 [2024-11-18 16:18:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:18,941 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 571 transitions. [2024-11-18 16:18:18,941 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 16:18:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 571 transitions. [2024-11-18 16:18:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:18,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:18,947 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 16:18:18,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:18:18,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:18,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash 592178992, now seen corresponding path program 1 times [2024-11-18 16:18:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:18,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843320912] [2024-11-18 16:18:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:18,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:19,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843320912] [2024-11-18 16:18:19,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843320912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:19,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:19,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:19,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214113582] [2024-11-18 16:18:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:19,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:19,093 INFO L87 Difference]: Start difference. First operand 395 states and 571 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 16:18:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:19,133 INFO L93 Difference]: Finished difference Result 596 states and 846 transitions. [2024-11-18 16:18:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:19,134 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 16:18:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:19,137 INFO L225 Difference]: With dead ends: 596 [2024-11-18 16:18:19,137 INFO L226 Difference]: Without dead ends: 405 [2024-11-18 16:18:19,138 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 16:18:19,140 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 0 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2060 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 16:18:19,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2060 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-18 16:18:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2024-11-18 16:18:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 331 states have (on average 1.4501510574018126) internal successors, (480), 339 states have internal predecessors, (480), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2024-11-18 16:18:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 581 transitions. [2024-11-18 16:18:19,177 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 581 transitions. Word has length 65 [2024-11-18 16:18:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:19,179 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 581 transitions. [2024-11-18 16:18:19,179 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 16:18:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 581 transitions. [2024-11-18 16:18:19,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:19,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:19,186 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 16:18:19,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:18:19,186 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:19,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1978382386, now seen corresponding path program 1 times [2024-11-18 16:18:19,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179920271] [2024-11-18 16:18:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:19,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:19,342 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 16:18:19,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:19,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179920271] [2024-11-18 16:18:19,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179920271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:19,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:19,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:19,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708075057] [2024-11-18 16:18:19,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:19,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:19,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:19,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:19,346 INFO L87 Difference]: Start difference. First operand 405 states and 581 transitions. 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 16:18:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:19,932 INFO L93 Difference]: Finished difference Result 730 states and 1029 transitions. [2024-11-18 16:18:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:18:19,933 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 16:18:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:19,939 INFO L225 Difference]: With dead ends: 730 [2024-11-18 16:18:19,941 INFO L226 Difference]: Without dead ends: 528 [2024-11-18 16:18:19,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:18:19,945 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 322 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:19,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 914 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:18:19,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-18 16:18:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 497. [2024-11-18 16:18:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 404 states have (on average 1.4232673267326732) internal successors, (575), 413 states have internal predecessors, (575), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2024-11-18 16:18:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 700 transitions. [2024-11-18 16:18:19,985 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 700 transitions. Word has length 65 [2024-11-18 16:18:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:19,986 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 700 transitions. [2024-11-18 16:18:19,987 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 16:18:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 700 transitions. [2024-11-18 16:18:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:19,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:19,989 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 16:18:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:18:19,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:19,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2118930996, now seen corresponding path program 1 times [2024-11-18 16:18:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:19,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627703038] [2024-11-18 16:18:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:20,149 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 16:18:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627703038] [2024-11-18 16:18:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627703038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:20,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729765613] [2024-11-18 16:18:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:20,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:20,152 INFO L87 Difference]: Start difference. First operand 497 states and 700 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 16:18:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:20,843 INFO L93 Difference]: Finished difference Result 868 states and 1181 transitions. [2024-11-18 16:18:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 16:18:20,844 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 16:18:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:20,851 INFO L225 Difference]: With dead ends: 868 [2024-11-18 16:18:20,852 INFO L226 Difference]: Without dead ends: 583 [2024-11-18 16:18:20,853 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 16:18:20,854 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 600 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:20,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1001 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-18 16:18:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 509. [2024-11-18 16:18:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 414 states have (on average 1.4130434782608696) internal successors, (585), 423 states have internal predecessors, (585), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-18 16:18:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 710 transitions. [2024-11-18 16:18:20,901 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 710 transitions. Word has length 65 [2024-11-18 16:18:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:20,902 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 710 transitions. [2024-11-18 16:18:20,902 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 16:18:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 710 transitions. [2024-11-18 16:18:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:20,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:20,906 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 16:18:20,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:18:20,906 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:20,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1984917490, now seen corresponding path program 1 times [2024-11-18 16:18:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337016096] [2024-11-18 16:18:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:20,995 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 16:18:20,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:20,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337016096] [2024-11-18 16:18:20,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337016096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:20,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:20,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019829185] [2024-11-18 16:18:20,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:20,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:20,999 INFO L87 Difference]: Start difference. First operand 509 states and 710 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 16:18:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:21,427 INFO L93 Difference]: Finished difference Result 1099 states and 1486 transitions. [2024-11-18 16:18:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:18:21,428 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 16:18:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:21,436 INFO L225 Difference]: With dead ends: 1099 [2024-11-18 16:18:21,437 INFO L226 Difference]: Without dead ends: 803 [2024-11-18 16:18:21,439 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 16:18:21,440 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 559 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:21,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 497 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-18 16:18:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 799. [2024-11-18 16:18:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 638 states have (on average 1.3667711598746082) internal successors, (872), 654 states have internal predecessors, (872), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2024-11-18 16:18:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1089 transitions. [2024-11-18 16:18:21,512 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1089 transitions. Word has length 65 [2024-11-18 16:18:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:21,513 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1089 transitions. [2024-11-18 16:18:21,513 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 16:18:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1089 transitions. [2024-11-18 16:18:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:18:21,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:21,517 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 16:18:21,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:18:21,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:21,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2085986588, now seen corresponding path program 1 times [2024-11-18 16:18:21,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:21,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690485925] [2024-11-18 16:18:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:21,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:21,589 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 16:18:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690485925] [2024-11-18 16:18:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690485925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:21,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867163228] [2024-11-18 16:18:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:21,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:21,592 INFO L87 Difference]: Start difference. First operand 799 states and 1089 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 16:18:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:21,705 INFO L93 Difference]: Finished difference Result 1910 states and 2548 transitions. [2024-11-18 16:18:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:21,706 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 16:18:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:21,713 INFO L225 Difference]: With dead ends: 1910 [2024-11-18 16:18:21,714 INFO L226 Difference]: Without dead ends: 1303 [2024-11-18 16:18:21,716 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 16:18:21,717 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 103 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:21,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 793 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-18 16:18:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1280. [2024-11-18 16:18:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1017 states have (on average 1.3303834808259587) internal successors, (1353), 1036 states have internal predecessors, (1353), 137 states have call successors, (137), 96 states have call predecessors, (137), 124 states have return successors, (197), 154 states have call predecessors, (197), 133 states have call successors, (197) [2024-11-18 16:18:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1687 transitions. [2024-11-18 16:18:21,809 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1687 transitions. Word has length 66 [2024-11-18 16:18:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:21,810 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1687 transitions. [2024-11-18 16:18:21,810 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 16:18:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1687 transitions. [2024-11-18 16:18:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:18:21,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:21,813 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 16:18:21,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:18:21,813 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:21,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash -750741049, now seen corresponding path program 1 times [2024-11-18 16:18:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:21,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94485537] [2024-11-18 16:18:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:21,847 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 16:18:21,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94485537] [2024-11-18 16:18:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94485537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:21,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:21,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:21,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107860828] [2024-11-18 16:18:21,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:21,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:21,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:21,849 INFO L87 Difference]: Start difference. First operand 1280 states and 1687 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 16:18:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:22,045 INFO L93 Difference]: Finished difference Result 3308 states and 4304 transitions. [2024-11-18 16:18:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:22,045 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 16:18:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:22,060 INFO L225 Difference]: With dead ends: 3308 [2024-11-18 16:18:22,060 INFO L226 Difference]: Without dead ends: 2240 [2024-11-18 16:18:22,065 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 16:18:22,066 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 385 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:22,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 522 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2024-11-18 16:18:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2142. [2024-11-18 16:18:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1683 states have (on average 1.2953060011883542) internal successors, (2180), 1712 states have internal predecessors, (2180), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2024-11-18 16:18:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2748 transitions. [2024-11-18 16:18:22,269 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2748 transitions. Word has length 66 [2024-11-18 16:18:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:22,271 INFO L471 AbstractCegarLoop]: Abstraction has 2142 states and 2748 transitions. [2024-11-18 16:18:22,271 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 16:18:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2748 transitions. [2024-11-18 16:18:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 16:18:22,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:22,275 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] [2024-11-18 16:18:22,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:18:22,279 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:22,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1699431707, now seen corresponding path program 1 times [2024-11-18 16:18:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320764275] [2024-11-18 16:18:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320764275] [2024-11-18 16:18:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320764275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:22,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:22,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:22,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639728454] [2024-11-18 16:18:22,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:22,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:22,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:22,327 INFO L87 Difference]: Start difference. First operand 2142 states and 2748 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 16:18:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:22,562 INFO L93 Difference]: Finished difference Result 4844 states and 6162 transitions. [2024-11-18 16:18:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:22,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 72 [2024-11-18 16:18:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:22,583 INFO L225 Difference]: With dead ends: 4844 [2024-11-18 16:18:22,583 INFO L226 Difference]: Without dead ends: 2914 [2024-11-18 16:18:22,590 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 16:18:22,592 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 385 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:22,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 537 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2024-11-18 16:18:22,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2874. [2024-11-18 16:18:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2251 states have (on average 1.281208351843625) internal successors, (2884), 2288 states have internal predecessors, (2884), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2024-11-18 16:18:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3641 transitions. [2024-11-18 16:18:22,868 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3641 transitions. Word has length 72 [2024-11-18 16:18:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:22,868 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 3641 transitions. [2024-11-18 16:18:22,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 16:18:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3641 transitions. [2024-11-18 16:18:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:18:22,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:22,871 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 16:18:22,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:18:22,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:22,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 626400016, now seen corresponding path program 1 times [2024-11-18 16:18:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710455206] [2024-11-18 16:18:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:22,956 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 16:18:22,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:22,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710455206] [2024-11-18 16:18:22,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710455206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:22,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:22,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52179135] [2024-11-18 16:18:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:22,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:22,958 INFO L87 Difference]: Start difference. First operand 2874 states and 3641 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 16:18:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:23,357 INFO L93 Difference]: Finished difference Result 3405 states and 4296 transitions. [2024-11-18 16:18:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:23,357 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 16:18:23,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:23,378 INFO L225 Difference]: With dead ends: 3405 [2024-11-18 16:18:23,378 INFO L226 Difference]: Without dead ends: 3402 [2024-11-18 16:18:23,380 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 16:18:23,381 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 767 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:23,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 516 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:18:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2024-11-18 16:18:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3368. [2024-11-18 16:18:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2636 states have (on average 1.2731411229135052) internal successors, (3356), 2678 states have internal predecessors, (3356), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2024-11-18 16:18:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4242 transitions. [2024-11-18 16:18:23,695 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4242 transitions. Word has length 73 [2024-11-18 16:18:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:23,696 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4242 transitions. [2024-11-18 16:18:23,696 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 16:18:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4242 transitions. [2024-11-18 16:18:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:18:23,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:23,699 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 16:18:23,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:18:23,699 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:23,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2057315323, now seen corresponding path program 1 times [2024-11-18 16:18:23,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:23,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414852071] [2024-11-18 16:18:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:23,818 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 16:18:23,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414852071] [2024-11-18 16:18:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414852071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:18:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139693786] [2024-11-18 16:18:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:23,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:18:23,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:18:23,822 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 16:18:23,824 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 16:18:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:23,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:18:23,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:18:24,236 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 16:18:24,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:18:24,344 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 16:18:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139693786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:18:24,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:18:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-18 16:18:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719934119] [2024-11-18 16:18:24,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:18:24,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:18:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:18:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:24,346 INFO L87 Difference]: Start difference. First operand 3368 states and 4242 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 16:18:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:25,236 INFO L93 Difference]: Finished difference Result 7249 states and 9096 transitions. [2024-11-18 16:18:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:18:25,237 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 16:18:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:25,278 INFO L225 Difference]: With dead ends: 7249 [2024-11-18 16:18:25,278 INFO L226 Difference]: Without dead ends: 7246 [2024-11-18 16:18:25,283 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 16:18:25,284 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 806 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:25,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1837 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2024-11-18 16:18:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 5158. [2024-11-18 16:18:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4040 states have (on average 1.2702970297029703) internal successors, (5132), 4104 states have internal predecessors, (5132), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2024-11-18 16:18:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 6480 transitions. [2024-11-18 16:18:25,854 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 6480 transitions. Word has length 74 [2024-11-18 16:18:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:25,854 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 6480 transitions. [2024-11-18 16:18:25,855 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 16:18:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 6480 transitions. [2024-11-18 16:18:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:18:25,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:25,858 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 16:18:25,878 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 16:18:26,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 16:18:26,060 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:26,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1368954160, now seen corresponding path program 2 times [2024-11-18 16:18:26,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:26,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407638445] [2024-11-18 16:18:26,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 16:18:26,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:26,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 16:18:26,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 16:18:26,096 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 16:18:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:26,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407638445] [2024-11-18 16:18:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407638445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:26,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393210733] [2024-11-18 16:18:26,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:26,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:26,099 INFO L87 Difference]: Start difference. First operand 5158 states and 6480 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 16:18:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:26,433 INFO L93 Difference]: Finished difference Result 7625 states and 9609 transitions. [2024-11-18 16:18:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:26,434 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 16:18:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:26,459 INFO L225 Difference]: With dead ends: 7625 [2024-11-18 16:18:26,459 INFO L226 Difference]: Without dead ends: 3550 [2024-11-18 16:18:26,471 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 16:18:26,471 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 384 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 617 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 16:18:26,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 617 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2024-11-18 16:18:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3530. [2024-11-18 16:18:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 2768 states have (on average 1.254335260115607) internal successors, (3472), 2810 states have internal predecessors, (3472), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2024-11-18 16:18:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4378 transitions. [2024-11-18 16:18:26,801 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4378 transitions. Word has length 77 [2024-11-18 16:18:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:26,802 INFO L471 AbstractCegarLoop]: Abstraction has 3530 states and 4378 transitions. [2024-11-18 16:18:26,802 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 16:18:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4378 transitions. [2024-11-18 16:18:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 16:18:26,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:26,805 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 16:18:26,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:18:26,806 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:26,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash 255750743, now seen corresponding path program 1 times [2024-11-18 16:18:26,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:26,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271111647] [2024-11-18 16:18:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:26,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:26,901 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 16:18:26,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:26,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271111647] [2024-11-18 16:18:26,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271111647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:26,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:26,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646332785] [2024-11-18 16:18:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:26,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:26,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:26,903 INFO L87 Difference]: Start difference. First operand 3530 states and 4378 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 16:18:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:28,458 INFO L93 Difference]: Finished difference Result 10382 states and 12775 transitions. [2024-11-18 16:18:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 16:18:28,459 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 16:18:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:28,527 INFO L225 Difference]: With dead ends: 10382 [2024-11-18 16:18:28,528 INFO L226 Difference]: Without dead ends: 5759 [2024-11-18 16:18:28,547 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 16:18:28,549 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 611 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:28,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1284 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2024-11-18 16:18:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 5502. [2024-11-18 16:18:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 4288 states have (on average 1.2280783582089552) internal successors, (5266), 4366 states have internal predecessors, (5266), 590 states have call successors, (590), 490 states have call predecessors, (590), 622 states have return successors, (881), 652 states have call predecessors, (881), 587 states have call successors, (881) [2024-11-18 16:18:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 6737 transitions. [2024-11-18 16:18:29,281 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 6737 transitions. Word has length 84 [2024-11-18 16:18:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:29,281 INFO L471 AbstractCegarLoop]: Abstraction has 5502 states and 6737 transitions. [2024-11-18 16:18:29,282 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 16:18:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 6737 transitions. [2024-11-18 16:18:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 16:18:29,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:29,291 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 16:18:29,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:18:29,292 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:29,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash 430266766, now seen corresponding path program 1 times [2024-11-18 16:18:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:29,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368021886] [2024-11-18 16:18:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:29,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:29,444 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 16:18:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368021886] [2024-11-18 16:18:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368021886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:29,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:18:29,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338570086] [2024-11-18 16:18:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:29,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:18:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:18:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:29,448 INFO L87 Difference]: Start difference. First operand 5502 states and 6737 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 16:18:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:30,897 INFO L93 Difference]: Finished difference Result 9526 states and 11620 transitions. [2024-11-18 16:18:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:18:30,898 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 16:18:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:30,932 INFO L225 Difference]: With dead ends: 9526 [2024-11-18 16:18:30,932 INFO L226 Difference]: Without dead ends: 4882 [2024-11-18 16:18:30,945 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 16:18:30,946 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 1208 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:30,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1363 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 16:18:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2024-11-18 16:18:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4601. [2024-11-18 16:18:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 3593 states have (on average 1.2201502922349012) internal successors, (4384), 3654 states have internal predecessors, (4384), 494 states have call successors, (494), 405 states have call predecessors, (494), 512 states have return successors, (669), 548 states have call predecessors, (669), 491 states have call successors, (669) [2024-11-18 16:18:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5547 transitions. [2024-11-18 16:18:31,348 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5547 transitions. Word has length 93 [2024-11-18 16:18:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:31,348 INFO L471 AbstractCegarLoop]: Abstraction has 4601 states and 5547 transitions. [2024-11-18 16:18:31,349 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 16:18:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5547 transitions. [2024-11-18 16:18:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:31,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:31,353 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] [2024-11-18 16:18:31,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:18:31,353 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:31,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 196053049, now seen corresponding path program 1 times [2024-11-18 16:18:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744358516] [2024-11-18 16:18:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:31,444 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 16:18:31,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744358516] [2024-11-18 16:18:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744358516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:31,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:31,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746271538] [2024-11-18 16:18:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:31,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:31,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:31,449 INFO L87 Difference]: Start difference. First operand 4601 states and 5547 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 16:18:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:32,216 INFO L93 Difference]: Finished difference Result 4971 states and 6111 transitions. [2024-11-18 16:18:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:32,249 INFO L225 Difference]: With dead ends: 4971 [2024-11-18 16:18:32,250 INFO L226 Difference]: Without dead ends: 4794 [2024-11-18 16:18:32,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:32,255 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 656 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:32,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 944 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:18:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2024-11-18 16:18:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4779. [2024-11-18 16:18:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 3751 states have (on average 1.2335377232737936) internal successors, (4627), 3813 states have internal predecessors, (4627), 507 states have call successors, (507), 411 states have call predecessors, (507), 519 states have return successors, (683), 561 states have call predecessors, (683), 504 states have call successors, (683) [2024-11-18 16:18:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 5817 transitions. [2024-11-18 16:18:32,916 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 5817 transitions. Word has length 91 [2024-11-18 16:18:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:32,917 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 5817 transitions. [2024-11-18 16:18:32,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 16:18:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 5817 transitions. [2024-11-18 16:18:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:32,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:32,922 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] [2024-11-18 16:18:32,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:18:32,922 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:32,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:32,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1858651595, now seen corresponding path program 1 times [2024-11-18 16:18:32,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689944076] [2024-11-18 16:18:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:32,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:33,065 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 16:18:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689944076] [2024-11-18 16:18:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689944076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682849021] [2024-11-18 16:18:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:33,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:33,069 INFO L87 Difference]: Start difference. First operand 4779 states and 5817 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:34,157 INFO L93 Difference]: Finished difference Result 5356 states and 6700 transitions. [2024-11-18 16:18:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:34,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:34,177 INFO L225 Difference]: With dead ends: 5356 [2024-11-18 16:18:34,178 INFO L226 Difference]: Without dead ends: 5001 [2024-11-18 16:18:34,181 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 16:18:34,182 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 663 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:34,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1298 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:18:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2024-11-18 16:18:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 4946. [2024-11-18 16:18:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 3898 states have (on average 1.2437147255002565) internal successors, (4848), 3961 states have internal predecessors, (4848), 520 states have call successors, (520), 417 states have call predecessors, (520), 526 states have return successors, (699), 575 states have call predecessors, (699), 517 states have call successors, (699) [2024-11-18 16:18:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 6067 transitions. [2024-11-18 16:18:34,592 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 6067 transitions. Word has length 91 [2024-11-18 16:18:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:34,593 INFO L471 AbstractCegarLoop]: Abstraction has 4946 states and 6067 transitions. [2024-11-18 16:18:34,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 6067 transitions. [2024-11-18 16:18:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:34,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:34,597 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] [2024-11-18 16:18:34,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:18:34,598 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:34,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash -124547145, now seen corresponding path program 1 times [2024-11-18 16:18:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:34,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906462969] [2024-11-18 16:18:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:34,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:34,717 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 16:18:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:34,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906462969] [2024-11-18 16:18:34,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906462969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:34,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:34,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032337992] [2024-11-18 16:18:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:34,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:34,720 INFO L87 Difference]: Start difference. First operand 4946 states and 6067 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:35,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:35,780 INFO L93 Difference]: Finished difference Result 5879 states and 7493 transitions. [2024-11-18 16:18:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:35,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:35,809 INFO L225 Difference]: With dead ends: 5879 [2024-11-18 16:18:35,810 INFO L226 Difference]: Without dead ends: 5357 [2024-11-18 16:18:35,815 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 16:18:35,816 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 644 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:35,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1679 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:35,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2024-11-18 16:18:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 5297. [2024-11-18 16:18:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4207 states have (on average 1.263845971000713) internal successors, (5317), 4274 states have internal predecessors, (5317), 546 states have call successors, (546), 429 states have call predecessors, (546), 542 states have return successors, (737), 603 states have call predecessors, (737), 543 states have call successors, (737) [2024-11-18 16:18:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6600 transitions. [2024-11-18 16:18:36,206 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6600 transitions. Word has length 91 [2024-11-18 16:18:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:36,207 INFO L471 AbstractCegarLoop]: Abstraction has 5297 states and 6600 transitions. [2024-11-18 16:18:36,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6600 transitions. [2024-11-18 16:18:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:36,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:36,211 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] [2024-11-18 16:18:36,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:18:36,211 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:36,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash 762675701, now seen corresponding path program 1 times [2024-11-18 16:18:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:36,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913146017] [2024-11-18 16:18:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:36,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913146017] [2024-11-18 16:18:36,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913146017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:36,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:36,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:36,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747462444] [2024-11-18 16:18:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:36,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:36,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:36,329 INFO L87 Difference]: Start difference. First operand 5297 states and 6600 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:37,113 INFO L93 Difference]: Finished difference Result 6258 states and 8089 transitions. [2024-11-18 16:18:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:37,141 INFO L225 Difference]: With dead ends: 6258 [2024-11-18 16:18:37,142 INFO L226 Difference]: Without dead ends: 5385 [2024-11-18 16:18:37,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:37,149 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 523 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:37,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 712 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2024-11-18 16:18:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 5297. [2024-11-18 16:18:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4207 states have (on average 1.262657475635845) internal successors, (5312), 4274 states have internal predecessors, (5312), 546 states have call successors, (546), 429 states have call predecessors, (546), 542 states have return successors, (737), 603 states have call predecessors, (737), 543 states have call successors, (737) [2024-11-18 16:18:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6595 transitions. [2024-11-18 16:18:37,900 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6595 transitions. Word has length 91 [2024-11-18 16:18:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:37,901 INFO L471 AbstractCegarLoop]: Abstraction has 5297 states and 6595 transitions. [2024-11-18 16:18:37,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6595 transitions. [2024-11-18 16:18:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:37,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:37,906 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] [2024-11-18 16:18:37,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:18:37,907 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:37,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1148366857, now seen corresponding path program 1 times [2024-11-18 16:18:37,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:37,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482638808] [2024-11-18 16:18:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:38,033 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 16:18:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:38,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482638808] [2024-11-18 16:18:38,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482638808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:38,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:38,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376652071] [2024-11-18 16:18:38,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:38,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:38,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:38,037 INFO L87 Difference]: Start difference. First operand 5297 states and 6595 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:39,201 INFO L93 Difference]: Finished difference Result 6972 states and 9161 transitions. [2024-11-18 16:18:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:39,231 INFO L225 Difference]: With dead ends: 6972 [2024-11-18 16:18:39,231 INFO L226 Difference]: Without dead ends: 6099 [2024-11-18 16:18:39,238 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 16:18:39,239 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 631 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:39,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1648 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2024-11-18 16:18:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6035. [2024-11-18 16:18:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6035 states, 4855 states have (on average 1.2972193614830072) internal successors, (6298), 4936 states have internal predecessors, (6298), 598 states have call successors, (598), 453 states have call predecessors, (598), 580 states have return successors, (837), 659 states have call predecessors, (837), 595 states have call successors, (837) [2024-11-18 16:18:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 7733 transitions. [2024-11-18 16:18:39,926 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 7733 transitions. Word has length 91 [2024-11-18 16:18:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:39,927 INFO L471 AbstractCegarLoop]: Abstraction has 6035 states and 7733 transitions. [2024-11-18 16:18:39,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 7733 transitions. [2024-11-18 16:18:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:39,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:39,932 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] [2024-11-18 16:18:39,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:18:39,932 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:39,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1071466059, now seen corresponding path program 1 times [2024-11-18 16:18:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221991464] [2024-11-18 16:18:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:39,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:40,008 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 16:18:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:40,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221991464] [2024-11-18 16:18:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221991464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474934760] [2024-11-18 16:18:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:40,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:40,011 INFO L87 Difference]: Start difference. First operand 6035 states and 7733 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:40,798 INFO L93 Difference]: Finished difference Result 7791 states and 10471 transitions. [2024-11-18 16:18:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:40,827 INFO L225 Difference]: With dead ends: 7791 [2024-11-18 16:18:40,827 INFO L226 Difference]: Without dead ends: 6180 [2024-11-18 16:18:40,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:40,835 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 516 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:40,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 690 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2024-11-18 16:18:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 6035. [2024-11-18 16:18:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6035 states, 4855 states have (on average 1.2953656024716786) internal successors, (6289), 4936 states have internal predecessors, (6289), 598 states have call successors, (598), 453 states have call predecessors, (598), 580 states have return successors, (837), 659 states have call predecessors, (837), 595 states have call successors, (837) [2024-11-18 16:18:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 7724 transitions. [2024-11-18 16:18:41,399 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 7724 transitions. Word has length 91 [2024-11-18 16:18:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:41,399 INFO L471 AbstractCegarLoop]: Abstraction has 6035 states and 7724 transitions. [2024-11-18 16:18:41,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 7724 transitions. [2024-11-18 16:18:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:41,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:41,405 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] [2024-11-18 16:18:41,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:18:41,405 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:41,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash 836991731, now seen corresponding path program 1 times [2024-11-18 16:18:41,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:41,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434954104] [2024-11-18 16:18:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:41,473 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 16:18:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434954104] [2024-11-18 16:18:41,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434954104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:41,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:41,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:41,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910654761] [2024-11-18 16:18:41,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:41,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:41,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:41,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:41,476 INFO L87 Difference]: Start difference. First operand 6035 states and 7724 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:42,430 INFO L93 Difference]: Finished difference Result 7762 states and 10395 transitions. [2024-11-18 16:18:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:42,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:42,459 INFO L225 Difference]: With dead ends: 7762 [2024-11-18 16:18:42,460 INFO L226 Difference]: Without dead ends: 6151 [2024-11-18 16:18:42,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:42,469 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 513 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:42,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 682 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2024-11-18 16:18:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 6035. [2024-11-18 16:18:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6035 states, 4855 states have (on average 1.29351184346035) internal successors, (6280), 4936 states have internal predecessors, (6280), 598 states have call successors, (598), 453 states have call predecessors, (598), 580 states have return successors, (837), 659 states have call predecessors, (837), 595 states have call successors, (837) [2024-11-18 16:18:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 7715 transitions. [2024-11-18 16:18:43,039 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 7715 transitions. Word has length 91 [2024-11-18 16:18:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:43,039 INFO L471 AbstractCegarLoop]: Abstraction has 6035 states and 7715 transitions. [2024-11-18 16:18:43,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 7715 transitions. [2024-11-18 16:18:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:43,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:43,047 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] [2024-11-18 16:18:43,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:18:43,047 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:43,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash 344365557, now seen corresponding path program 1 times [2024-11-18 16:18:43,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781098850] [2024-11-18 16:18:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:43,149 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 16:18:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781098850] [2024-11-18 16:18:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781098850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51301431] [2024-11-18 16:18:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:43,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:43,152 INFO L87 Difference]: Start difference. First operand 6035 states and 7715 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:44,785 INFO L93 Difference]: Finished difference Result 9284 states and 12716 transitions. [2024-11-18 16:18:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:44,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:44,822 INFO L225 Difference]: With dead ends: 9284 [2024-11-18 16:18:44,823 INFO L226 Difference]: Without dead ends: 7673 [2024-11-18 16:18:44,833 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 16:18:44,834 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 651 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:44,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1571 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7673 states. [2024-11-18 16:18:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7673 to 7505. [2024-11-18 16:18:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 6135 states have (on average 1.3362673186634066) internal successors, (8198), 6262 states have internal predecessors, (8198), 694 states have call successors, (694), 501 states have call predecessors, (694), 674 states have return successors, (1125), 763 states have call predecessors, (1125), 691 states have call successors, (1125) [2024-11-18 16:18:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 10017 transitions. [2024-11-18 16:18:45,575 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 10017 transitions. Word has length 91 [2024-11-18 16:18:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:45,576 INFO L471 AbstractCegarLoop]: Abstraction has 7505 states and 10017 transitions. [2024-11-18 16:18:45,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 10017 transitions. [2024-11-18 16:18:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:45,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:45,583 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] [2024-11-18 16:18:45,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:18:45,584 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:45,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1298305715, now seen corresponding path program 1 times [2024-11-18 16:18:45,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:45,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902604469] [2024-11-18 16:18:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:45,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:45,683 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 16:18:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902604469] [2024-11-18 16:18:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902604469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:45,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:45,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522882429] [2024-11-18 16:18:45,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:45,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:45,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:45,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:45,688 INFO L87 Difference]: Start difference. First operand 7505 states and 10017 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:46,892 INFO L93 Difference]: Finished difference Result 13764 states and 19992 transitions. [2024-11-18 16:18:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 16:18:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:46,949 INFO L225 Difference]: With dead ends: 13764 [2024-11-18 16:18:46,950 INFO L226 Difference]: Without dead ends: 10683 [2024-11-18 16:18:46,966 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 16:18:46,967 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 640 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:46,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1154 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:18:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2024-11-18 16:18:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 10502. [2024-11-18 16:18:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 8706 states have (on average 1.379508385021824) internal successors, (12010), 8979 states have internal predecessors, (12010), 878 states have call successors, (878), 597 states have call predecessors, (878), 916 states have return successors, (2077), 963 states have call predecessors, (2077), 875 states have call successors, (2077) [2024-11-18 16:18:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 14965 transitions. [2024-11-18 16:18:47,970 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 14965 transitions. Word has length 91 [2024-11-18 16:18:47,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:47,970 INFO L471 AbstractCegarLoop]: Abstraction has 10502 states and 14965 transitions. [2024-11-18 16:18:47,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 16:18:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 14965 transitions. [2024-11-18 16:18:47,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:47,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:47,980 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] [2024-11-18 16:18:47,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:18:47,981 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:47,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:47,981 INFO L85 PathProgramCache]: Analyzing trace with hash 82151989, now seen corresponding path program 1 times [2024-11-18 16:18:47,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:47,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814328953] [2024-11-18 16:18:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:47,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:48,042 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 16:18:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814328953] [2024-11-18 16:18:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814328953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444072484] [2024-11-18 16:18:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:48,045 INFO L87 Difference]: Start difference. First operand 10502 states and 14965 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:48,823 INFO L93 Difference]: Finished difference Result 16678 states and 24979 transitions. [2024-11-18 16:18:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:18:48,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:18:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:48,869 INFO L225 Difference]: With dead ends: 16678 [2024-11-18 16:18:48,869 INFO L226 Difference]: Without dead ends: 10601 [2024-11-18 16:18:48,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:48,893 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:48,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10601 states. [2024-11-18 16:18:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10601 to 10601. [2024-11-18 16:18:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10601 states, 8805 states have (on average 1.3752413401476433) internal successors, (12109), 9078 states have internal predecessors, (12109), 878 states have call successors, (878), 597 states have call predecessors, (878), 916 states have return successors, (2077), 963 states have call predecessors, (2077), 875 states have call successors, (2077) [2024-11-18 16:18:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10601 states to 10601 states and 15064 transitions. [2024-11-18 16:18:49,927 INFO L78 Accepts]: Start accepts. Automaton has 10601 states and 15064 transitions. Word has length 91 [2024-11-18 16:18:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:49,928 INFO L471 AbstractCegarLoop]: Abstraction has 10601 states and 15064 transitions. [2024-11-18 16:18:49,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 10601 states and 15064 transitions. [2024-11-18 16:18:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:49,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:49,939 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] [2024-11-18 16:18:49,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:18:49,939 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:49,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash 515881075, now seen corresponding path program 1 times [2024-11-18 16:18:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:49,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41386432] [2024-11-18 16:18:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:49,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:50,004 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 16:18:50,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41386432] [2024-11-18 16:18:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41386432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:50,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:50,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557469146] [2024-11-18 16:18:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:50,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:50,008 INFO L87 Difference]: Start difference. First operand 10601 states and 15064 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:51,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:51,424 INFO L93 Difference]: Finished difference Result 22787 states and 34528 transitions. [2024-11-18 16:18:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:51,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:18:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:51,504 INFO L225 Difference]: With dead ends: 22787 [2024-11-18 16:18:51,505 INFO L226 Difference]: Without dead ends: 16611 [2024-11-18 16:18:51,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:51,535 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 619 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:51,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1204 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:18:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16611 states. [2024-11-18 16:18:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16611 to 16541. [2024-11-18 16:18:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16541 states, 13970 states have (on average 1.4125984251968504) internal successors, (19734), 14455 states have internal predecessors, (19734), 1243 states have call successors, (1243), 795 states have call predecessors, (1243), 1326 states have return successors, (3435), 1328 states have call predecessors, (3435), 1240 states have call successors, (3435) [2024-11-18 16:18:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16541 states to 16541 states and 24412 transitions. [2024-11-18 16:18:52,849 INFO L78 Accepts]: Start accepts. Automaton has 16541 states and 24412 transitions. Word has length 91 [2024-11-18 16:18:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:52,850 INFO L471 AbstractCegarLoop]: Abstraction has 16541 states and 24412 transitions. [2024-11-18 16:18:52,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 16541 states and 24412 transitions. [2024-11-18 16:18:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:52,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:52,859 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] [2024-11-18 16:18:52,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 16:18:52,859 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:52,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash 523631634, now seen corresponding path program 1 times [2024-11-18 16:18:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934892330] [2024-11-18 16:18:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:52,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:52,919 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 16:18:52,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934892330] [2024-11-18 16:18:52,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934892330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:52,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:52,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:52,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545155047] [2024-11-18 16:18:52,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:52,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:52,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:52,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:52,923 INFO L87 Difference]: Start difference. First operand 16541 states and 24412 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:53,986 INFO L93 Difference]: Finished difference Result 28756 states and 44040 transitions. [2024-11-18 16:18:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:18:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:18:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:54,064 INFO L225 Difference]: With dead ends: 28756 [2024-11-18 16:18:54,065 INFO L226 Difference]: Without dead ends: 16640 [2024-11-18 16:18:54,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:54,104 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:54,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16640 states. [2024-11-18 16:18:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16640 to 16640. [2024-11-18 16:18:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16640 states, 14069 states have (on average 1.4073494917904612) internal successors, (19800), 14554 states have internal predecessors, (19800), 1243 states have call successors, (1243), 795 states have call predecessors, (1243), 1326 states have return successors, (3435), 1328 states have call predecessors, (3435), 1240 states have call successors, (3435) [2024-11-18 16:18:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16640 states to 16640 states and 24478 transitions. [2024-11-18 16:18:55,507 INFO L78 Accepts]: Start accepts. Automaton has 16640 states and 24478 transitions. Word has length 91 [2024-11-18 16:18:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:55,508 INFO L471 AbstractCegarLoop]: Abstraction has 16640 states and 24478 transitions. [2024-11-18 16:18:55,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 16640 states and 24478 transitions. [2024-11-18 16:18:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:55,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:55,516 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] [2024-11-18 16:18:55,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 16:18:55,516 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:55,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2061971664, now seen corresponding path program 1 times [2024-11-18 16:18:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20017444] [2024-11-18 16:18:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:55,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:55,572 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 16:18:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20017444] [2024-11-18 16:18:55,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20017444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:55,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:55,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707193417] [2024-11-18 16:18:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:55,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:55,575 INFO L87 Difference]: Start difference. First operand 16640 states and 24478 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:56,880 INFO L93 Difference]: Finished difference Result 29053 states and 44304 transitions. [2024-11-18 16:18:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:18:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:18:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:56,946 INFO L225 Difference]: With dead ends: 29053 [2024-11-18 16:18:56,946 INFO L226 Difference]: Without dead ends: 16838 [2024-11-18 16:18:56,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:56,981 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:56,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16838 states. [2024-11-18 16:18:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16838 to 16838. [2024-11-18 16:18:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16838 states, 14267 states have (on average 1.4016962220508866) internal successors, (19998), 14752 states have internal predecessors, (19998), 1243 states have call successors, (1243), 795 states have call predecessors, (1243), 1326 states have return successors, (3435), 1328 states have call predecessors, (3435), 1240 states have call successors, (3435) [2024-11-18 16:18:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16838 states to 16838 states and 24676 transitions. [2024-11-18 16:18:58,806 INFO L78 Accepts]: Start accepts. Automaton has 16838 states and 24676 transitions. Word has length 91 [2024-11-18 16:18:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:58,806 INFO L471 AbstractCegarLoop]: Abstraction has 16838 states and 24676 transitions. [2024-11-18 16:18:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 16838 states and 24676 transitions. [2024-11-18 16:18:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:18:58,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:58,814 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] [2024-11-18 16:18:58,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 16:18:58,814 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:58,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash -304722930, now seen corresponding path program 1 times [2024-11-18 16:18:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113854998] [2024-11-18 16:18:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:58,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:58,855 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 16:18:58,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:58,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113854998] [2024-11-18 16:18:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113854998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:58,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106782107] [2024-11-18 16:18:58,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:58,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:58,859 INFO L87 Difference]: Start difference. First operand 16838 states and 24676 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:00,576 INFO L93 Difference]: Finished difference Result 41429 states and 63427 transitions. [2024-11-18 16:19:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:19:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:00,670 INFO L225 Difference]: With dead ends: 41429 [2024-11-18 16:19:00,671 INFO L226 Difference]: Without dead ends: 29016 [2024-11-18 16:19:00,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:00,697 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 631 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:00,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1204 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:19:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29016 states. [2024-11-18 16:19:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29016 to 28880. [2024-11-18 16:19:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28880 states, 24760 states have (on average 1.4235056542810987) internal successors, (35246), 25669 states have internal predecessors, (35246), 1972 states have call successors, (1972), 1191 states have call predecessors, (1972), 2146 states have return successors, (6150), 2057 states have call predecessors, (6150), 1969 states have call successors, (6150) [2024-11-18 16:19:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28880 states to 28880 states and 43368 transitions. [2024-11-18 16:19:02,751 INFO L78 Accepts]: Start accepts. Automaton has 28880 states and 43368 transitions. Word has length 91 [2024-11-18 16:19:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:02,752 INFO L471 AbstractCegarLoop]: Abstraction has 28880 states and 43368 transitions. [2024-11-18 16:19:02,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28880 states and 43368 transitions. [2024-11-18 16:19:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:19:02,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:02,760 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:02,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 16:19:02,761 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:02,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:02,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1579825619, now seen corresponding path program 1 times [2024-11-18 16:19:02,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:02,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012073866] [2024-11-18 16:19:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:02,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:02,813 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 16:19:02,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012073866] [2024-11-18 16:19:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012073866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:02,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:02,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564495465] [2024-11-18 16:19:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:02,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:02,816 INFO L87 Difference]: Start difference. First operand 28880 states and 43368 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:05,077 INFO L93 Difference]: Finished difference Result 53533 states and 82417 transitions. [2024-11-18 16:19:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:19:05,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:19:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:05,189 INFO L225 Difference]: With dead ends: 53533 [2024-11-18 16:19:05,190 INFO L226 Difference]: Without dead ends: 29078 [2024-11-18 16:19:05,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:05,244 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:05,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29078 states. [2024-11-18 16:19:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29078 to 29078. [2024-11-18 16:19:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29078 states, 24958 states have (on average 1.417501402355958) internal successors, (35378), 25867 states have internal predecessors, (35378), 1972 states have call successors, (1972), 1191 states have call predecessors, (1972), 2146 states have return successors, (6150), 2057 states have call predecessors, (6150), 1969 states have call successors, (6150) [2024-11-18 16:19:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29078 states to 29078 states and 43500 transitions. [2024-11-18 16:19:07,465 INFO L78 Accepts]: Start accepts. Automaton has 29078 states and 43500 transitions. Word has length 91 [2024-11-18 16:19:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:07,465 INFO L471 AbstractCegarLoop]: Abstraction has 29078 states and 43500 transitions. [2024-11-18 16:19:07,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 29078 states and 43500 transitions. [2024-11-18 16:19:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:19:07,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:07,595 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] [2024-11-18 16:19:07,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 16:19:07,595 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:07,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1343334379, now seen corresponding path program 1 times [2024-11-18 16:19:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807211630] [2024-11-18 16:19:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:07,657 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 16:19:07,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807211630] [2024-11-18 16:19:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807211630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:07,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:19:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194448525] [2024-11-18 16:19:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:19:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:19:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:07,660 INFO L87 Difference]: Start difference. First operand 29078 states and 43500 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:10,959 INFO L93 Difference]: Finished difference Result 77723 states and 119544 transitions. [2024-11-18 16:19:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:10,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:19:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:11,156 INFO L225 Difference]: With dead ends: 77723 [2024-11-18 16:19:11,156 INFO L226 Difference]: Without dead ends: 53070 [2024-11-18 16:19:11,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:11,216 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 637 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:11,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1204 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:19:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53070 states. [2024-11-18 16:19:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53070 to 52802. [2024-11-18 16:19:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52802 states, 45682 states have (on average 1.429053018694453) internal successors, (65282), 47439 states have internal predecessors, (65282), 3332 states have call successors, (3332), 1983 states have call predecessors, (3332), 3786 states have return successors, (11482), 3417 states have call predecessors, (11482), 3329 states have call successors, (11482) [2024-11-18 16:19:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52802 states to 52802 states and 80096 transitions. [2024-11-18 16:19:15,963 INFO L78 Accepts]: Start accepts. Automaton has 52802 states and 80096 transitions. Word has length 91 [2024-11-18 16:19:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:15,963 INFO L471 AbstractCegarLoop]: Abstraction has 52802 states and 80096 transitions. [2024-11-18 16:19:15,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 52802 states and 80096 transitions. [2024-11-18 16:19:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:19:15,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:15,970 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] [2024-11-18 16:19:15,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 16:19:15,970 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:15,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1866655050, now seen corresponding path program 1 times [2024-11-18 16:19:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:15,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348976795] [2024-11-18 16:19:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:16,026 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 16:19:16,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348976795] [2024-11-18 16:19:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348976795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:16,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:16,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:16,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337332719] [2024-11-18 16:19:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:16,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:16,029 INFO L87 Difference]: Start difference. First operand 52802 states and 80096 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:19,264 INFO L93 Difference]: Finished difference Result 101575 states and 156705 transitions. [2024-11-18 16:19:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:19:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 16:19:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:19,461 INFO L225 Difference]: With dead ends: 101575 [2024-11-18 16:19:19,461 INFO L226 Difference]: Without dead ends: 53198 [2024-11-18 16:19:19,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:19,541 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:19,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53198 states.