./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.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_1.cil-2+token_ring.02.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 a145625a0fe2baedf73b7a84d58038ade27f8470c6f09a0f78d8ec75fe662acb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:16:10,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:16:10,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:16:10,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:16:10,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:16:10,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:16:10,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:16:10,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:16:10,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:16:10,613 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:16:10,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:16:10,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:16:10,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:16:10,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:16:10,620 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:16:10,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:16:10,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:16:10,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:16:10,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:16:10,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:16:10,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:16:10,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:16:10,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:16:10,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:16:10,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:16:10,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:16:10,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:16:10,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:16:10,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:16:10,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:16:10,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:16:10,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:16:10,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:16:10,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:16:10,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:16:10,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:16:10,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:16:10,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:16:10,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:16:10,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:16:10,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:16:10,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:16:10,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a145625a0fe2baedf73b7a84d58038ade27f8470c6f09a0f78d8ec75fe662acb [2024-11-18 16:16:10,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:16:10,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:16:10,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:16:10,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:16:10,939 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:16:10,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-2.c [2024-11-18 16:16:12,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:16:12,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:16:12,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-2.c [2024-11-18 16:16:12,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9bfe17b/260b1b52049c453c9e4883797fa050a2/FLAG2b19c5b4b [2024-11-18 16:16:13,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9bfe17b/260b1b52049c453c9e4883797fa050a2 [2024-11-18 16:16:13,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:16:13,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:16:13,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:16:13,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:16:13,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:16:13,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192d73f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13, skipping insertion in model container [2024-11-18 16:16:13,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,166 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:16:13,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-2.c[913,926] [2024-11-18 16:16:13,371 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-2.c[5977,5990] [2024-11-18 16:16:13,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:16:13,419 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:16:13,430 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-2.c[913,926] [2024-11-18 16:16:13,452 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-2.c[5977,5990] [2024-11-18 16:16:13,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:16:13,510 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:16:13,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13 WrapperNode [2024-11-18 16:16:13,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:16:13,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:16:13,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:16:13,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:16:13,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,585 INFO L138 Inliner]: procedures = 52, calls = 55, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 489 [2024-11-18 16:16:13,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:16:13,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:16:13,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:16:13,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:16:13,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,640 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 16:16:13,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:16:13,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:16:13,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:16:13,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:16:13,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (1/1) ... [2024-11-18 16:16:13,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:16:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:13,720 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 16:16:13,755 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 16:16:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:16:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-18 16:16:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-18 16:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:16:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:16:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:16:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:16:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:16:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:16:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:16:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:16:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:16:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:16:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:16:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:16:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:16:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:16:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:16:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:16:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:16:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:16:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:16:13,961 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:16:13,964 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:16:14,489 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2024-11-18 16:16:14,492 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:16:14,511 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:16:14,512 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-18 16:16:14,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:16:14 BoogieIcfgContainer [2024-11-18 16:16:14,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:16:14,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:16:14,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:16:14,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:16:14,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:16:13" (1/3) ... [2024-11-18 16:16:14,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db44f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:16:14, skipping insertion in model container [2024-11-18 16:16:14,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:13" (2/3) ... [2024-11-18 16:16:14,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db44f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:16:14, skipping insertion in model container [2024-11-18 16:16:14,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:16:14" (3/3) ... [2024-11-18 16:16:14,526 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.02.cil-2.c [2024-11-18 16:16:14,549 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:16:14,549 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:16:14,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:16:14,647 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;@4eb148ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:16:14,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:16:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 178 states have (on average 1.5674157303370786) internal successors, (279), 185 states have internal predecessors, (279), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 16:16:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:16:14,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:14,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:14,669 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:14,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1765665656, now seen corresponding path program 1 times [2024-11-18 16:16:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793792575] [2024-11-18 16:16:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:14,943 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 16:16:14,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793792575] [2024-11-18 16:16:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793792575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:14,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:14,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531673430] [2024-11-18 16:16:14,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:14,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:14,979 INFO L87 Difference]: Start difference. First operand has 215 states, 178 states have (on average 1.5674157303370786) internal successors, (279), 185 states have internal predecessors, (279), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:15,069 INFO L93 Difference]: Finished difference Result 473 states and 726 transitions. [2024-11-18 16:16:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:15,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-18 16:16:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:15,084 INFO L225 Difference]: With dead ends: 473 [2024-11-18 16:16:15,084 INFO L226 Difference]: Without dead ends: 263 [2024-11-18 16:16:15,087 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 16:16:15,090 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 280 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:15,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 401 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-18 16:16:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2024-11-18 16:16:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 219 states have (on average 1.4383561643835616) internal successors, (315), 223 states have internal predecessors, (315), 28 states have call successors, (28), 12 states have call predecessors, (28), 10 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-18 16:16:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 371 transitions. [2024-11-18 16:16:15,173 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 371 transitions. Word has length 44 [2024-11-18 16:16:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:15,173 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 371 transitions. [2024-11-18 16:16:15,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 371 transitions. [2024-11-18 16:16:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:16:15,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:15,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:15,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:16:15,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:15,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -578495213, now seen corresponding path program 1 times [2024-11-18 16:16:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130875387] [2024-11-18 16:16:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:15,355 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 16:16:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130875387] [2024-11-18 16:16:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130875387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:15,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:15,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724193456] [2024-11-18 16:16:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:15,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:15,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:15,364 INFO L87 Difference]: Start difference. First operand 259 states and 371 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:15,448 INFO L93 Difference]: Finished difference Result 467 states and 659 transitions. [2024-11-18 16:16:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-18 16:16:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:15,457 INFO L225 Difference]: With dead ends: 467 [2024-11-18 16:16:15,458 INFO L226 Difference]: Without dead ends: 352 [2024-11-18 16:16:15,460 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 16:16:15,463 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 67 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:15,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 587 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-18 16:16:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 326. [2024-11-18 16:16:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 280 states have (on average 1.425) internal successors, (399), 284 states have internal predecessors, (399), 31 states have call successors, (31), 15 states have call predecessors, (31), 13 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-18 16:16:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 462 transitions. [2024-11-18 16:16:15,495 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 462 transitions. Word has length 45 [2024-11-18 16:16:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:15,496 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 462 transitions. [2024-11-18 16:16:15,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 462 transitions. [2024-11-18 16:16:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:16:15,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:15,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:15,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:16:15,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:15,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1862852674, now seen corresponding path program 1 times [2024-11-18 16:16:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946294273] [2024-11-18 16:16:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:15,605 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 16:16:15,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:15,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946294273] [2024-11-18 16:16:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946294273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:15,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:15,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771373004] [2024-11-18 16:16:15,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:15,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:15,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:15,609 INFO L87 Difference]: Start difference. First operand 326 states and 462 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:15,656 INFO L93 Difference]: Finished difference Result 679 states and 950 transitions. [2024-11-18 16:16:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-18 16:16:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:15,661 INFO L225 Difference]: With dead ends: 679 [2024-11-18 16:16:15,661 INFO L226 Difference]: Without dead ends: 497 [2024-11-18 16:16:15,662 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 16:16:15,663 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 268 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 380 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 16:16:15,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 380 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-18 16:16:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 483. [2024-11-18 16:16:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 419 states have (on average 1.3866348448687351) internal successors, (581), 425 states have internal predecessors, (581), 42 states have call successors, (42), 22 states have call predecessors, (42), 20 states have return successors, (48), 36 states have call predecessors, (48), 38 states have call successors, (48) [2024-11-18 16:16:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 671 transitions. [2024-11-18 16:16:15,698 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 671 transitions. Word has length 45 [2024-11-18 16:16:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:15,698 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 671 transitions. [2024-11-18 16:16:15,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 671 transitions. [2024-11-18 16:16:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 16:16:15,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:15,702 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:15,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:16:15,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:15,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1327812664, now seen corresponding path program 1 times [2024-11-18 16:16:15,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:15,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047387723] [2024-11-18 16:16:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:15,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:15,874 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 16:16:15,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:15,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047387723] [2024-11-18 16:16:15,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047387723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:15,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:15,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669116729] [2024-11-18 16:16:15,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:15,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:15,877 INFO L87 Difference]: Start difference. First operand 483 states and 671 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:15,937 INFO L93 Difference]: Finished difference Result 995 states and 1368 transitions. [2024-11-18 16:16:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-18 16:16:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:15,943 INFO L225 Difference]: With dead ends: 995 [2024-11-18 16:16:15,943 INFO L226 Difference]: Without dead ends: 656 [2024-11-18 16:16:15,945 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 16:16:15,947 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 55 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:15,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 632 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-18 16:16:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2024-11-18 16:16:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 570 states have (on average 1.3368421052631578) internal successors, (762), 576 states have internal predecessors, (762), 56 states have call successors, (56), 30 states have call predecessors, (56), 28 states have return successors, (70), 50 states have call predecessors, (70), 52 states have call successors, (70) [2024-11-18 16:16:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 888 transitions. [2024-11-18 16:16:16,021 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 888 transitions. Word has length 62 [2024-11-18 16:16:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:16,022 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 888 transitions. [2024-11-18 16:16:16,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 888 transitions. [2024-11-18 16:16:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:16:16,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:16,028 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:16,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:16:16,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:16,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash 520711232, now seen corresponding path program 1 times [2024-11-18 16:16:16,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74671830] [2024-11-18 16:16:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 16:16:16,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74671830] [2024-11-18 16:16:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74671830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364847861] [2024-11-18 16:16:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:16,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:16,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:16,133 INFO L87 Difference]: Start difference. First operand 656 states and 888 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:16,196 INFO L93 Difference]: Finished difference Result 1203 states and 1609 transitions. [2024-11-18 16:16:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:16,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-18 16:16:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:16,203 INFO L225 Difference]: With dead ends: 1203 [2024-11-18 16:16:16,203 INFO L226 Difference]: Without dead ends: 783 [2024-11-18 16:16:16,204 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 16:16:16,209 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 255 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 376 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 16:16:16,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 376 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-18 16:16:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2024-11-18 16:16:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 683 states have (on average 1.308931185944363) internal successors, (894), 689 states have internal predecessors, (894), 64 states have call successors, (64), 36 states have call predecessors, (64), 34 states have return successors, (82), 58 states have call predecessors, (82), 60 states have call successors, (82) [2024-11-18 16:16:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1040 transitions. [2024-11-18 16:16:16,262 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1040 transitions. Word has length 67 [2024-11-18 16:16:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:16,263 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1040 transitions. [2024-11-18 16:16:16,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1040 transitions. [2024-11-18 16:16:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:16,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:16,269 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] [2024-11-18 16:16:16,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:16:16,269 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:16,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash -993850290, now seen corresponding path program 1 times [2024-11-18 16:16:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:16,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765125396] [2024-11-18 16:16:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:16,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:16,417 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 16:16:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765125396] [2024-11-18 16:16:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765125396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:16,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635093247] [2024-11-18 16:16:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:16,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:16,421 INFO L87 Difference]: Start difference. First operand 783 states and 1040 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 16:16:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:16,855 INFO L93 Difference]: Finished difference Result 1045 states and 1428 transitions. [2024-11-18 16:16:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:16:16,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 69 [2024-11-18 16:16:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:16,863 INFO L225 Difference]: With dead ends: 1045 [2024-11-18 16:16:16,864 INFO L226 Difference]: Without dead ends: 918 [2024-11-18 16:16:16,865 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 16:16:16,867 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 436 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:16,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 702 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-18 16:16:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 907. [2024-11-18 16:16:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 789 states have (on average 1.3346007604562737) internal successors, (1053), 796 states have internal predecessors, (1053), 75 states have call successors, (75), 42 states have call predecessors, (75), 41 states have return successors, (94), 69 states have call predecessors, (94), 71 states have call successors, (94) [2024-11-18 16:16:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1222 transitions. [2024-11-18 16:16:16,934 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1222 transitions. Word has length 69 [2024-11-18 16:16:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:16,934 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1222 transitions. [2024-11-18 16:16:16,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 16:16:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1222 transitions. [2024-11-18 16:16:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:16,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:16,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:16,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:16:16,939 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:16,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash -891135926, now seen corresponding path program 1 times [2024-11-18 16:16:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140195381] [2024-11-18 16:16:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:17,128 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 16:16:17,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:17,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140195381] [2024-11-18 16:16:17,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140195381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:17,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853651905] [2024-11-18 16:16:17,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:17,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:17,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:17,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:17,133 INFO L87 Difference]: Start difference. First operand 907 states and 1222 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:17,713 INFO L93 Difference]: Finished difference Result 1310 states and 1817 transitions. [2024-11-18 16:16:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:17,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2024-11-18 16:16:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:17,720 INFO L225 Difference]: With dead ends: 1310 [2024-11-18 16:16:17,720 INFO L226 Difference]: Without dead ends: 1059 [2024-11-18 16:16:17,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 16:16:17,722 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 425 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:17,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1218 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:16:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-18 16:16:17,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1024. [2024-11-18 16:16:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 888 states have (on average 1.3490990990990992) internal successors, (1198), 896 states have internal predecessors, (1198), 86 states have call successors, (86), 48 states have call predecessors, (86), 48 states have return successors, (108), 81 states have call predecessors, (108), 82 states have call successors, (108) [2024-11-18 16:16:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1392 transitions. [2024-11-18 16:16:17,787 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1392 transitions. Word has length 69 [2024-11-18 16:16:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:17,788 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1392 transitions. [2024-11-18 16:16:17,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1392 transitions. [2024-11-18 16:16:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:17,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:17,790 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] [2024-11-18 16:16:17,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:16:17,791 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:17,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 495649484, now seen corresponding path program 1 times [2024-11-18 16:16:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678787057] [2024-11-18 16:16:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:17,923 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 16:16:17,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678787057] [2024-11-18 16:16:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678787057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:17,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105785700] [2024-11-18 16:16:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:17,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:17,926 INFO L87 Difference]: Start difference. First operand 1024 states and 1392 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:18,506 INFO L93 Difference]: Finished difference Result 1671 states and 2346 transitions. [2024-11-18 16:16:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2024-11-18 16:16:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:18,514 INFO L225 Difference]: With dead ends: 1671 [2024-11-18 16:16:18,515 INFO L226 Difference]: Without dead ends: 1303 [2024-11-18 16:16:18,518 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 16:16:18,521 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 420 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:18,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1202 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-18 16:16:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1267. [2024-11-18 16:16:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1093 states have (on average 1.3714547118023788) internal successors, (1499), 1105 states have internal predecessors, (1499), 108 states have call successors, (108), 60 states have call predecessors, (108), 64 states have return successors, (142), 105 states have call predecessors, (142), 104 states have call successors, (142) [2024-11-18 16:16:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1749 transitions. [2024-11-18 16:16:18,600 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1749 transitions. Word has length 69 [2024-11-18 16:16:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:18,600 INFO L471 AbstractCegarLoop]: Abstraction has 1267 states and 1749 transitions. [2024-11-18 16:16:18,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1749 transitions. [2024-11-18 16:16:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:18,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:18,604 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] [2024-11-18 16:16:18,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:16:18,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:18,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1371668490, now seen corresponding path program 1 times [2024-11-18 16:16:18,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:18,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275469328] [2024-11-18 16:16:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:18,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:18,691 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 16:16:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:18,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275469328] [2024-11-18 16:16:18,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275469328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:18,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446005491] [2024-11-18 16:16:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:18,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:18,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:18,694 INFO L87 Difference]: Start difference. First operand 1267 states and 1749 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:19,017 INFO L93 Difference]: Finished difference Result 1922 states and 2726 transitions. [2024-11-18 16:16:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:19,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2024-11-18 16:16:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:19,024 INFO L225 Difference]: With dead ends: 1922 [2024-11-18 16:16:19,025 INFO L226 Difference]: Without dead ends: 1311 [2024-11-18 16:16:19,027 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 16:16:19,028 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 353 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:19,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 530 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:16:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2024-11-18 16:16:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1267. [2024-11-18 16:16:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1093 states have (on average 1.3668801463860933) internal successors, (1494), 1105 states have internal predecessors, (1494), 108 states have call successors, (108), 60 states have call predecessors, (108), 64 states have return successors, (142), 105 states have call predecessors, (142), 104 states have call successors, (142) [2024-11-18 16:16:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1744 transitions. [2024-11-18 16:16:19,109 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1744 transitions. Word has length 69 [2024-11-18 16:16:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:19,109 INFO L471 AbstractCegarLoop]: Abstraction has 1267 states and 1744 transitions. [2024-11-18 16:16:19,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1744 transitions. [2024-11-18 16:16:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:19,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:19,112 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] [2024-11-18 16:16:19,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:16:19,113 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:19,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1815569164, now seen corresponding path program 1 times [2024-11-18 16:16:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:19,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988192012] [2024-11-18 16:16:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:19,222 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 16:16:19,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:19,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988192012] [2024-11-18 16:16:19,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988192012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:19,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:19,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:19,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692254326] [2024-11-18 16:16:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:19,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:19,224 INFO L87 Difference]: Start difference. First operand 1267 states and 1744 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:19,799 INFO L93 Difference]: Finished difference Result 2452 states and 3487 transitions. [2024-11-18 16:16:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2024-11-18 16:16:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:19,809 INFO L225 Difference]: With dead ends: 2452 [2024-11-18 16:16:19,810 INFO L226 Difference]: Without dead ends: 1841 [2024-11-18 16:16:19,812 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 16:16:19,813 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 419 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:19,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1154 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-11-18 16:16:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1713. [2024-11-18 16:16:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1461 states have (on average 1.379876796714579) internal successors, (2016), 1487 states have internal predecessors, (2016), 148 states have call successors, (148), 84 states have call predecessors, (148), 102 states have return successors, (230), 149 states have call predecessors, (230), 144 states have call successors, (230) [2024-11-18 16:16:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2394 transitions. [2024-11-18 16:16:19,912 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2394 transitions. Word has length 69 [2024-11-18 16:16:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:19,914 INFO L471 AbstractCegarLoop]: Abstraction has 1713 states and 2394 transitions. [2024-11-18 16:16:19,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2394 transitions. [2024-11-18 16:16:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:19,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:19,918 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] [2024-11-18 16:16:19,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:16:19,918 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:19,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash -941058102, now seen corresponding path program 1 times [2024-11-18 16:16:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123888091] [2024-11-18 16:16:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:19,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:20,026 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 16:16:20,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123888091] [2024-11-18 16:16:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123888091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:20,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:20,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:20,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308852054] [2024-11-18 16:16:20,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:20,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:20,028 INFO L87 Difference]: Start difference. First operand 1713 states and 2394 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:20,333 INFO L93 Difference]: Finished difference Result 2828 states and 4046 transitions. [2024-11-18 16:16:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2024-11-18 16:16:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:20,344 INFO L225 Difference]: With dead ends: 2828 [2024-11-18 16:16:20,344 INFO L226 Difference]: Without dead ends: 1771 [2024-11-18 16:16:20,348 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 16:16:20,349 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 349 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:20,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 516 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:16:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2024-11-18 16:16:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1713. [2024-11-18 16:16:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1461 states have (on average 1.373716632443532) internal successors, (2007), 1487 states have internal predecessors, (2007), 148 states have call successors, (148), 84 states have call predecessors, (148), 102 states have return successors, (230), 149 states have call predecessors, (230), 144 states have call successors, (230) [2024-11-18 16:16:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2385 transitions. [2024-11-18 16:16:20,532 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2385 transitions. Word has length 69 [2024-11-18 16:16:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:20,532 INFO L471 AbstractCegarLoop]: Abstraction has 1713 states and 2385 transitions. [2024-11-18 16:16:20,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 16:16:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2385 transitions. [2024-11-18 16:16:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:20,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:20,536 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] [2024-11-18 16:16:20,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:16:20,536 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:20,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1325323084, now seen corresponding path program 1 times [2024-11-18 16:16:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568198619] [2024-11-18 16:16:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:20,587 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 16:16:20,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568198619] [2024-11-18 16:16:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568198619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:20,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:20,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:16:20,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6594747] [2024-11-18 16:16:20,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:20,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:16:20,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:16:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:16:20,590 INFO L87 Difference]: Start difference. First operand 1713 states and 2385 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, (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 16:16:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:20,848 INFO L93 Difference]: Finished difference Result 3352 states and 4806 transitions. [2024-11-18 16:16:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:20,849 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, (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 69 [2024-11-18 16:16:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:20,862 INFO L225 Difference]: With dead ends: 3352 [2024-11-18 16:16:20,862 INFO L226 Difference]: Without dead ends: 2296 [2024-11-18 16:16:20,867 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 16:16:20,867 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 414 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:20,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 809 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2024-11-18 16:16:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2264. [2024-11-18 16:16:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1920 states have (on average 1.3692708333333334) internal successors, (2629), 1957 states have internal predecessors, (2629), 204 states have call successors, (204), 114 states have call predecessors, (204), 138 states have return successors, (299), 200 states have call predecessors, (299), 200 states have call successors, (299) [2024-11-18 16:16:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3132 transitions. [2024-11-18 16:16:21,052 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3132 transitions. Word has length 69 [2024-11-18 16:16:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:21,052 INFO L471 AbstractCegarLoop]: Abstraction has 2264 states and 3132 transitions. [2024-11-18 16:16:21,052 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, (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 16:16:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3132 transitions. [2024-11-18 16:16:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:16:21,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:21,056 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:21,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:16:21,057 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:21,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1780771492, now seen corresponding path program 1 times [2024-11-18 16:16:21,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:21,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148044878] [2024-11-18 16:16:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 16:16:21,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:21,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148044878] [2024-11-18 16:16:21,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148044878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:21,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533313729] [2024-11-18 16:16:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:21,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:21,138 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 16:16:21,140 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 16:16:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:21,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:21,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:21,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533313729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:21,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842628093] [2024-11-18 16:16:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:21,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:21,345 INFO L87 Difference]: Start difference. First operand 2264 states and 3132 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:21,509 INFO L93 Difference]: Finished difference Result 2756 states and 3788 transitions. [2024-11-18 16:16:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:21,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-18 16:16:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:21,524 INFO L225 Difference]: With dead ends: 2756 [2024-11-18 16:16:21,525 INFO L226 Difference]: Without dead ends: 2262 [2024-11-18 16:16:21,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:21,529 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 72 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:21,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 601 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2024-11-18 16:16:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2218. [2024-11-18 16:16:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1880 states have (on average 1.3638297872340426) internal successors, (2564), 1917 states have internal predecessors, (2564), 200 states have call successors, (200), 112 states have call predecessors, (200), 136 states have return successors, (293), 196 states have call predecessors, (293), 196 states have call successors, (293) [2024-11-18 16:16:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3057 transitions. [2024-11-18 16:16:21,721 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3057 transitions. Word has length 68 [2024-11-18 16:16:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:21,722 INFO L471 AbstractCegarLoop]: Abstraction has 2218 states and 3057 transitions. [2024-11-18 16:16:21,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3057 transitions. [2024-11-18 16:16:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:16:21,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:21,725 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:21,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:21,926 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,SelfDestructingSolverStorable12 [2024-11-18 16:16:21,927 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:21,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash -334224029, now seen corresponding path program 1 times [2024-11-18 16:16:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915147598] [2024-11-18 16:16:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915147598] [2024-11-18 16:16:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915147598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629031144] [2024-11-18 16:16:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:21,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:21,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 16:16:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:22,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 16:16:22,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:22,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:16:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:22,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629031144] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:22,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 16:16:22,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-18 16:16:22,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428020149] [2024-11-18 16:16:22,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:22,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:16:22,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:16:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:16:22,220 INFO L87 Difference]: Start difference. First operand 2218 states and 3057 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:22,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:22,541 INFO L93 Difference]: Finished difference Result 2270 states and 3119 transitions. [2024-11-18 16:16:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:22,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-18 16:16:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:22,555 INFO L225 Difference]: With dead ends: 2270 [2024-11-18 16:16:22,556 INFO L226 Difference]: Without dead ends: 2267 [2024-11-18 16:16:22,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:16:22,559 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 495 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:22,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 376 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2024-11-18 16:16:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2217. [2024-11-18 16:16:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 1880 states have (on average 1.3627659574468085) internal successors, (2562), 1916 states have internal predecessors, (2562), 199 states have call successors, (199), 112 states have call predecessors, (199), 136 states have return successors, (293), 196 states have call predecessors, (293), 196 states have call successors, (293) [2024-11-18 16:16:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3054 transitions. [2024-11-18 16:16:22,753 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3054 transitions. Word has length 68 [2024-11-18 16:16:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:22,754 INFO L471 AbstractCegarLoop]: Abstraction has 2217 states and 3054 transitions. [2024-11-18 16:16:22,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3054 transitions. [2024-11-18 16:16:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:22,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:22,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:22,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 16:16:22,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 16:16:22,962 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:22,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1771700349, now seen corresponding path program 1 times [2024-11-18 16:16:22,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:22,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042332874] [2024-11-18 16:16:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:23,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042332874] [2024-11-18 16:16:23,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042332874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928649211] [2024-11-18 16:16:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:23,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:23,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:16:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:16:23,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:23,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:16:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:23,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928649211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:16:23,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:16:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-18 16:16:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309960919] [2024-11-18 16:16:23,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:16:23,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 16:16:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 16:16:23,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:16:23,488 INFO L87 Difference]: Start difference. First operand 2217 states and 3054 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 16:16:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:23,971 INFO L93 Difference]: Finished difference Result 3371 states and 4556 transitions. [2024-11-18 16:16:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 16:16:23,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-18 16:16:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:23,988 INFO L225 Difference]: With dead ends: 3371 [2024-11-18 16:16:23,989 INFO L226 Difference]: Without dead ends: 2926 [2024-11-18 16:16:23,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-18 16:16:23,993 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 453 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:23,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2311 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:16:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2024-11-18 16:16:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2564. [2024-11-18 16:16:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2191 states have (on average 1.340483797352807) internal successors, (2937), 2232 states have internal predecessors, (2937), 219 states have call successors, (219), 126 states have call predecessors, (219), 152 states have return successors, (324), 213 states have call predecessors, (324), 216 states have call successors, (324) [2024-11-18 16:16:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3480 transitions. [2024-11-18 16:16:24,210 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3480 transitions. Word has length 69 [2024-11-18 16:16:24,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:24,211 INFO L471 AbstractCegarLoop]: Abstraction has 2564 states and 3480 transitions. [2024-11-18 16:16:24,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 16:16:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3480 transitions. [2024-11-18 16:16:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 16:16:24,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:24,216 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:24,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 16:16:24,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:24,417 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:24,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1554888426, now seen corresponding path program 1 times [2024-11-18 16:16:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:24,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223438510] [2024-11-18 16:16:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 16:16:24,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223438510] [2024-11-18 16:16:24,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223438510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599245957] [2024-11-18 16:16:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:24,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:24,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:24,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:24,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:16:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:24,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:24,632 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599245957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528369182] [2024-11-18 16:16:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:24,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:24,635 INFO L87 Difference]: Start difference. First operand 2564 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 16:16:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:24,845 INFO L93 Difference]: Finished difference Result 3178 states and 4258 transitions. [2024-11-18 16:16:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-18 16:16:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:24,860 INFO L225 Difference]: With dead ends: 3178 [2024-11-18 16:16:24,860 INFO L226 Difference]: Without dead ends: 2490 [2024-11-18 16:16:24,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:24,864 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 248 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:24,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 391 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2024-11-18 16:16:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2481. [2024-11-18 16:16:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2116 states have (on average 1.3397920604914935) internal successors, (2835), 2158 states have internal predecessors, (2835), 215 states have call successors, (215), 122 states have call predecessors, (215), 148 states have return successors, (318), 208 states have call predecessors, (318), 212 states have call successors, (318) [2024-11-18 16:16:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3368 transitions. [2024-11-18 16:16:25,147 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3368 transitions. Word has length 88 [2024-11-18 16:16:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:25,148 INFO L471 AbstractCegarLoop]: Abstraction has 2481 states and 3368 transitions. [2024-11-18 16:16:25,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 16:16:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3368 transitions. [2024-11-18 16:16:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 16:16:25,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:25,158 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:25,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 16:16:25,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 16:16:25,359 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:25,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1062289899, now seen corresponding path program 1 times [2024-11-18 16:16:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993525118] [2024-11-18 16:16:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:25,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 16:16:25,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993525118] [2024-11-18 16:16:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993525118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866212240] [2024-11-18 16:16:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:25,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:25,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:25,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 16:16:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:25,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:25,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 16:16:25,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866212240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828571007] [2024-11-18 16:16:25,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:25,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:25,600 INFO L87 Difference]: Start difference. First operand 2481 states and 3368 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 16:16:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:25,791 INFO L93 Difference]: Finished difference Result 2856 states and 3827 transitions. [2024-11-18 16:16:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-18 16:16:25,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:25,802 INFO L225 Difference]: With dead ends: 2856 [2024-11-18 16:16:25,803 INFO L226 Difference]: Without dead ends: 1619 [2024-11-18 16:16:25,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 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 16:16:25,808 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 61 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:25,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 597 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-18 16:16:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1619. [2024-11-18 16:16:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1350 states have (on average 1.4088888888888889) internal successors, (1902), 1383 states have internal predecessors, (1902), 158 states have call successors, (158), 85 states have call predecessors, (158), 110 states have return successors, (233), 158 states have call predecessors, (233), 156 states have call successors, (233) [2024-11-18 16:16:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2293 transitions. [2024-11-18 16:16:25,982 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2293 transitions. Word has length 103 [2024-11-18 16:16:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:25,982 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 2293 transitions. [2024-11-18 16:16:25,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 16:16:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2293 transitions. [2024-11-18 16:16:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 16:16:25,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:25,987 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:26,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:26,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 16:16:26,189 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1930615596, now seen corresponding path program 1 times [2024-11-18 16:16:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621216947] [2024-11-18 16:16:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:26,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:26,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621216947] [2024-11-18 16:16:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621216947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178854139] [2024-11-18 16:16:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:26,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:26,269 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:26,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 16:16:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:26,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:26,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 16:16:26,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178854139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:26,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210499796] [2024-11-18 16:16:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:26,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:26,436 INFO L87 Difference]: Start difference. First operand 1619 states and 2293 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:26,667 INFO L93 Difference]: Finished difference Result 4762 states and 6791 transitions. [2024-11-18 16:16:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2024-11-18 16:16:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:26,687 INFO L225 Difference]: With dead ends: 4762 [2024-11-18 16:16:26,688 INFO L226 Difference]: Without dead ends: 3155 [2024-11-18 16:16:26,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 16:16:26,694 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 153 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:26,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 365 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2024-11-18 16:16:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 3123. [2024-11-18 16:16:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2606 states have (on average 1.406369915579432) internal successors, (3665), 2670 states have internal predecessors, (3665), 296 states have call successors, (296), 169 states have call predecessors, (296), 220 states have return successors, (441), 291 states have call predecessors, (441), 294 states have call successors, (441) [2024-11-18 16:16:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4402 transitions. [2024-11-18 16:16:26,962 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4402 transitions. Word has length 112 [2024-11-18 16:16:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:26,965 INFO L471 AbstractCegarLoop]: Abstraction has 3123 states and 4402 transitions. [2024-11-18 16:16:26,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4402 transitions. [2024-11-18 16:16:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 16:16:26,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:26,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:26,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 16:16:27,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 16:16:27,174 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:27,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash 464893684, now seen corresponding path program 1 times [2024-11-18 16:16:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010454721] [2024-11-18 16:16:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010454721] [2024-11-18 16:16:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010454721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183839959] [2024-11-18 16:16:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:27,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:27,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:27,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:27,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 16:16:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:27,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:27,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 16:16:27,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183839959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:27,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:27,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434282160] [2024-11-18 16:16:27,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:27,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:27,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:27,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:27,386 INFO L87 Difference]: Start difference. First operand 3123 states and 4402 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 16:16:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:27,842 INFO L93 Difference]: Finished difference Result 9129 states and 13030 transitions. [2024-11-18 16:16:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2024-11-18 16:16:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:27,896 INFO L225 Difference]: With dead ends: 9129 [2024-11-18 16:16:27,896 INFO L226 Difference]: Without dead ends: 6019 [2024-11-18 16:16:27,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 16:16:27,909 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 154 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:27,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 545 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2024-11-18 16:16:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 6019. [2024-11-18 16:16:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6019 states, 5009 states have (on average 1.3938909962068278) internal successors, (6982), 5126 states have internal predecessors, (6982), 569 states have call successors, (569), 337 states have call predecessors, (569), 440 states have return successors, (964), 571 states have call predecessors, (964), 567 states have call successors, (964) [2024-11-18 16:16:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 8515 transitions. [2024-11-18 16:16:28,491 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 8515 transitions. Word has length 112 [2024-11-18 16:16:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:28,492 INFO L471 AbstractCegarLoop]: Abstraction has 6019 states and 8515 transitions. [2024-11-18 16:16:28,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 16:16:28,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 8515 transitions. [2024-11-18 16:16:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 16:16:28,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:28,508 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:28,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 16:16:28,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:28,709 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:28,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1449281527, now seen corresponding path program 1 times [2024-11-18 16:16:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:28,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453890649] [2024-11-18 16:16:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 16:16:28,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453890649] [2024-11-18 16:16:28,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453890649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55749480] [2024-11-18 16:16:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:28,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:28,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 16:16:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:28,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:28,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 16:16:29,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55749480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:29,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714423243] [2024-11-18 16:16:29,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:29,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:29,043 INFO L87 Difference]: Start difference. First operand 6019 states and 8515 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:16:29,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:29,821 INFO L93 Difference]: Finished difference Result 17687 states and 25196 transitions. [2024-11-18 16:16:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:29,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 145 [2024-11-18 16:16:29,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:29,883 INFO L225 Difference]: With dead ends: 17687 [2024-11-18 16:16:29,883 INFO L226 Difference]: Without dead ends: 11685 [2024-11-18 16:16:29,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 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 16:16:29,908 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 110 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:29,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 385 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11685 states. [2024-11-18 16:16:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11685 to 11569. [2024-11-18 16:16:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 9651 states have (on average 1.3909439436327842) internal successors, (13424), 9882 states have internal predecessors, (13424), 1055 states have call successors, (1055), 655 states have call predecessors, (1055), 862 states have return successors, (1790), 1047 states have call predecessors, (1790), 1053 states have call successors, (1790) [2024-11-18 16:16:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 16269 transitions. [2024-11-18 16:16:31,107 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 16269 transitions. Word has length 145 [2024-11-18 16:16:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:31,108 INFO L471 AbstractCegarLoop]: Abstraction has 11569 states and 16269 transitions. [2024-11-18 16:16:31,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:16:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 16269 transitions. [2024-11-18 16:16:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 16:16:31,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:31,145 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:31,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 16:16:31,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:31,346 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:31,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -448603415, now seen corresponding path program 1 times [2024-11-18 16:16:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816727886] [2024-11-18 16:16:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 16:16:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816727886] [2024-11-18 16:16:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816727886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651526098] [2024-11-18 16:16:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:31,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:31,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:31,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:31,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 16:16:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:31,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:31,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 16:16:31,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651526098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:31,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:31,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:31,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930540540] [2024-11-18 16:16:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:31,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:31,653 INFO L87 Difference]: Start difference. First operand 11569 states and 16269 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 16:16:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:32,582 INFO L93 Difference]: Finished difference Result 24457 states and 34994 transitions. [2024-11-18 16:16:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-18 16:16:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:32,655 INFO L225 Difference]: With dead ends: 24457 [2024-11-18 16:16:32,655 INFO L226 Difference]: Without dead ends: 12907 [2024-11-18 16:16:32,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 16:16:32,701 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 129 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:32,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:32,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2024-11-18 16:16:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12907. [2024-11-18 16:16:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 10857 states have (on average 1.350833563599521) internal successors, (14666), 11088 states have internal predecessors, (14666), 1093 states have call successors, (1093), 749 states have call predecessors, (1093), 956 states have return successors, (1842), 1085 states have call predecessors, (1842), 1091 states have call successors, (1842) [2024-11-18 16:16:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 17601 transitions. [2024-11-18 16:16:33,798 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 17601 transitions. Word has length 163 [2024-11-18 16:16:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:33,799 INFO L471 AbstractCegarLoop]: Abstraction has 12907 states and 17601 transitions. [2024-11-18 16:16:33,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 16:16:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 17601 transitions. [2024-11-18 16:16:33,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 16:16:33,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:33,838 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:33,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 16:16:34,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:34,040 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:34,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1948154568, now seen corresponding path program 1 times [2024-11-18 16:16:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:34,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325549297] [2024-11-18 16:16:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 16:16:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325549297] [2024-11-18 16:16:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325549297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162941305] [2024-11-18 16:16:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:34,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:34,148 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:34,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 16:16:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:34,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:34,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 16:16:34,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162941305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:34,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427833335] [2024-11-18 16:16:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:34,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:34,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:34,355 INFO L87 Difference]: Start difference. First operand 12907 states and 17601 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 16:16:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:35,616 INFO L93 Difference]: Finished difference Result 27079 states and 37712 transitions. [2024-11-18 16:16:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:35,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-18 16:16:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:35,683 INFO L225 Difference]: With dead ends: 27079 [2024-11-18 16:16:35,683 INFO L226 Difference]: Without dead ends: 14191 [2024-11-18 16:16:35,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 16:16:35,719 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 145 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:35,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 225 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14191 states. [2024-11-18 16:16:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14191 to 14191. [2024-11-18 16:16:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14191 states, 12045 states have (on average 1.30560398505604) internal successors, (15726), 12276 states have internal predecessors, (15726), 1113 states have call successors, (1113), 825 states have call predecessors, (1113), 1032 states have return successors, (1862), 1105 states have call predecessors, (1862), 1111 states have call successors, (1862) [2024-11-18 16:16:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14191 states to 14191 states and 18701 transitions. [2024-11-18 16:16:36,762 INFO L78 Accepts]: Start accepts. Automaton has 14191 states and 18701 transitions. Word has length 163 [2024-11-18 16:16:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:36,762 INFO L471 AbstractCegarLoop]: Abstraction has 14191 states and 18701 transitions. [2024-11-18 16:16:36,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 16:16:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 14191 states and 18701 transitions. [2024-11-18 16:16:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 16:16:36,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:36,793 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:36,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 16:16:36,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 16:16:36,994 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:36,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash 101903914, now seen corresponding path program 1 times [2024-11-18 16:16:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058682357] [2024-11-18 16:16:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 16:16:37,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058682357] [2024-11-18 16:16:37,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058682357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117501167] [2024-11-18 16:16:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:37,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:37,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:37,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:37,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 16:16:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:37,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:37,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 16:16:37,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117501167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768207837] [2024-11-18 16:16:37,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:37,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:37,249 INFO L87 Difference]: Start difference. First operand 14191 states and 18701 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 16:16:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:38,835 INFO L93 Difference]: Finished difference Result 24853 states and 32682 transitions. [2024-11-18 16:16:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 163 [2024-11-18 16:16:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:38,910 INFO L225 Difference]: With dead ends: 24853 [2024-11-18 16:16:38,911 INFO L226 Difference]: Without dead ends: 15039 [2024-11-18 16:16:38,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 16:16:38,937 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 128 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:38,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 405 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15039 states. [2024-11-18 16:16:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15039 to 14939. [2024-11-18 16:16:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14939 states, 12753 states have (on average 1.2851877989492668) internal successors, (16390), 12984 states have internal predecessors, (16390), 1113 states have call successors, (1113), 865 states have call predecessors, (1113), 1072 states have return successors, (1902), 1105 states have call predecessors, (1902), 1111 states have call successors, (1902) [2024-11-18 16:16:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 19405 transitions. [2024-11-18 16:16:40,222 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 19405 transitions. Word has length 163 [2024-11-18 16:16:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:40,223 INFO L471 AbstractCegarLoop]: Abstraction has 14939 states and 19405 transitions. [2024-11-18 16:16:40,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 16:16:40,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 19405 transitions. [2024-11-18 16:16:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 16:16:40,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:40,249 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:40,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:40,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-18 16:16:40,451 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:40,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1385557928, now seen corresponding path program 1 times [2024-11-18 16:16:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:40,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612329239] [2024-11-18 16:16:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:40,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 16:16:40,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:40,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612329239] [2024-11-18 16:16:40,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612329239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:40,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396064058] [2024-11-18 16:16:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:40,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:40,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:40,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 16:16:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:40,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:40,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 16:16:40,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:40,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396064058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:40,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:40,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:40,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289881467] [2024-11-18 16:16:40,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:40,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:40,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:40,692 INFO L87 Difference]: Start difference. First operand 14939 states and 19405 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 16:16:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:42,885 INFO L93 Difference]: Finished difference Result 42667 states and 56047 transitions. [2024-11-18 16:16:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2024-11-18 16:16:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:43,150 INFO L225 Difference]: With dead ends: 42667 [2024-11-18 16:16:43,151 INFO L226 Difference]: Without dead ends: 27747 [2024-11-18 16:16:43,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 16:16:43,185 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 151 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:43,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 543 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27747 states. [2024-11-18 16:16:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27747 to 27743. [2024-11-18 16:16:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27743 states, 23599 states have (on average 1.2763252680198314) internal successors, (30120), 24060 states have internal predecessors, (30120), 2111 states have call successors, (2111), 1617 states have call predecessors, (2111), 2032 states have return successors, (4118), 2097 states have call predecessors, (4118), 2109 states have call successors, (4118) [2024-11-18 16:16:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27743 states to 27743 states and 36349 transitions. [2024-11-18 16:16:45,367 INFO L78 Accepts]: Start accepts. Automaton has 27743 states and 36349 transitions. Word has length 164 [2024-11-18 16:16:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:45,368 INFO L471 AbstractCegarLoop]: Abstraction has 27743 states and 36349 transitions. [2024-11-18 16:16:45,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 16:16:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 27743 states and 36349 transitions. [2024-11-18 16:16:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 16:16:45,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:45,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:45,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 16:16:45,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 16:16:45,621 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:45,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 797355349, now seen corresponding path program 1 times [2024-11-18 16:16:45,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:45,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453274914] [2024-11-18 16:16:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:45,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 16:16:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453274914] [2024-11-18 16:16:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453274914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791800549] [2024-11-18 16:16:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:45,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:45,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:45,715 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:45,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 16:16:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:45,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:45,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 16:16:45,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791800549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:45,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:45,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:45,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827822031] [2024-11-18 16:16:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:45,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:45,873 INFO L87 Difference]: Start difference. First operand 27743 states and 36349 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 16:16:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:49,473 INFO L93 Difference]: Finished difference Result 78953 states and 104653 transitions. [2024-11-18 16:16:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 165 [2024-11-18 16:16:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:49,724 INFO L225 Difference]: With dead ends: 78953 [2024-11-18 16:16:49,724 INFO L226 Difference]: Without dead ends: 51237 [2024-11-18 16:16:49,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 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 16:16:49,792 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 160 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:49,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 543 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51237 states. [2024-11-18 16:16:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51237 to 51233. [2024-11-18 16:16:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51233 states, 43397 states have (on average 1.2643270272138627) internal successors, (54868), 44318 states have internal predecessors, (54868), 3995 states have call successors, (3995), 3009 states have call predecessors, (3995), 3840 states have return successors, (8844), 3969 states have call predecessors, (8844), 3993 states have call successors, (8844) [2024-11-18 16:16:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51233 states to 51233 states and 67707 transitions. [2024-11-18 16:16:53,845 INFO L78 Accepts]: Start accepts. Automaton has 51233 states and 67707 transitions. Word has length 165 [2024-11-18 16:16:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:53,846 INFO L471 AbstractCegarLoop]: Abstraction has 51233 states and 67707 transitions. [2024-11-18 16:16:53,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 16:16:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 51233 states and 67707 transitions. [2024-11-18 16:16:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 16:16:53,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:53,918 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:53,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:54,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 16:16:54,119 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:54,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1158484257, now seen corresponding path program 1 times [2024-11-18 16:16:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:54,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93115837] [2024-11-18 16:16:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:54,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 16:16:54,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:54,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93115837] [2024-11-18 16:16:54,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93115837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:54,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697015755] [2024-11-18 16:16:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:54,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:54,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:54,209 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:54,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 16:16:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:54,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:54,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 16:16:54,401 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697015755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:54,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:54,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:54,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910432985] [2024-11-18 16:16:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:54,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:54,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:54,404 INFO L87 Difference]: Start difference. First operand 51233 states and 67707 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 16:16:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:57,829 INFO L93 Difference]: Finished difference Result 92235 states and 122133 transitions. [2024-11-18 16:16:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:57,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2024-11-18 16:16:57,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:58,145 INFO L225 Difference]: With dead ends: 92235 [2024-11-18 16:16:58,145 INFO L226 Difference]: Without dead ends: 52637 [2024-11-18 16:16:58,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 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 16:16:58,256 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 150 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 391 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 16:16:58,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 391 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52637 states.