./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd --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 205f0e0aff0d53187144e7eaaf7c9176a7ca6bc04dd0065235effeefd306421c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:45:44,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:45:45,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:45:45,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:45:45,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:45:45,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:45:45,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:45:45,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:45:45,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:45:45,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:45:45,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:45:45,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:45:45,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:45:45,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:45:45,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:45:45,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:45:45,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:45:45,105 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:45:45,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:45:45,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:45:45,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:45:45,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:45:45,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:45:45,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:45:45,106 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:45:45,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:45:45,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:45:45,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:45:45,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:45:45,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:45:45,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:45:45,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:45:45,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:45:45,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:45:45,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:45:45,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:45:45,108 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd 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 -> 205f0e0aff0d53187144e7eaaf7c9176a7ca6bc04dd0065235effeefd306421c [2024-11-13 14:45:45,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:45:45,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:45:45,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:45:45,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:45:45,440 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:45:45,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-13 14:45:47,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:45:47,673 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:45:47,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2024-11-13 14:45:47,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/data/8eb7c4a61/3d26cfbd3c494855bcf1b8b4a19727b4/FLAGc02808417 [2024-11-13 14:45:47,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/data/8eb7c4a61/3d26cfbd3c494855bcf1b8b4a19727b4 [2024-11-13 14:45:47,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:45:47,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:45:47,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:47,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:45:47,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:45:47,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:47" (1/1) ... [2024-11-13 14:45:47,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70be78c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:47, skipping insertion in model container [2024-11-13 14:45:47,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:47" (1/1) ... [2024-11-13 14:45:47,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:45:48,141 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2024-11-13 14:45:48,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:48,169 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:45:48,244 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2024-11-13 14:45:48,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:48,263 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:45:48,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48 WrapperNode [2024-11-13 14:45:48,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:48,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:48,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:45:48,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:45:48,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,353 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 495 [2024-11-13 14:45:48,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:48,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:45:48,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:45:48,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:45:48,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,411 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]. [2024-11-13 14:45:48,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:45:48,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:45:48,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:45:48,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:45:48,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (1/1) ... [2024-11-13 14:45:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:45:48,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:48,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:48,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a026bd8-6ede-4e4b-9dea-da1ad7bc36e1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:45:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:45:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:45:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:45:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:45:48,708 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:45:48,710 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:45:49,622 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-13 14:45:49,623 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:45:49,643 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:45:49,645 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:45:49,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:49 BoogieIcfgContainer [2024-11-13 14:45:49,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:45:49,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:45:49,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:45:49,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:45:49,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:45:47" (1/3) ... [2024-11-13 14:45:49,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207619e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:45:49, skipping insertion in model container [2024-11-13 14:45:49,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:48" (2/3) ... [2024-11-13 14:45:49,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207619e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:45:49, skipping insertion in model container [2024-11-13 14:45:49,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:49" (3/3) ... [2024-11-13 14:45:49,659 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2024-11-13 14:45:49,678 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:45:49,683 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c that has 1 procedures, 137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:45:49,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:45:49,788 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;@5fb8d73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:45:49,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:45:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7703703703703704) internal successors, (239), 136 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:45:49,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:49,809 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] [2024-11-13 14:45:49,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:49,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash 852781424, now seen corresponding path program 1 times [2024-11-13 14:45:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295542143] [2024-11-13 14:45:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295542143] [2024-11-13 14:45:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295542143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:50,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:50,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:45:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628961677] [2024-11-13 14:45:50,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:50,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:45:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:45:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:45:50,356 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7703703703703704) internal successors, (239), 136 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:50,392 INFO L93 Difference]: Finished difference Result 211 states and 367 transitions. [2024-11-13 14:45:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:45:50,395 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 14:45:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:50,408 INFO L225 Difference]: With dead ends: 211 [2024-11-13 14:45:50,409 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 14:45:50,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:45:50,418 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:50,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 14:45:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-13 14:45:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7575757575757576) internal successors, (232), 132 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 232 transitions. [2024-11-13 14:45:50,475 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 232 transitions. Word has length 37 [2024-11-13 14:45:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:50,476 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 232 transitions. [2024-11-13 14:45:50,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 232 transitions. [2024-11-13 14:45:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:45:50,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:50,480 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] [2024-11-13 14:45:50,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:45:50,481 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:50,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 35132974, now seen corresponding path program 1 times [2024-11-13 14:45:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018223431] [2024-11-13 14:45:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:51,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:51,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018223431] [2024-11-13 14:45:51,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018223431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:51,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:51,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:45:51,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827959921] [2024-11-13 14:45:51,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:51,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:45:51,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:45:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:51,065 INFO L87 Difference]: Start difference. First operand 133 states and 232 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:51,232 INFO L93 Difference]: Finished difference Result 210 states and 360 transitions. [2024-11-13 14:45:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:45:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 14:45:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:51,237 INFO L225 Difference]: With dead ends: 210 [2024-11-13 14:45:51,237 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 14:45:51,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:51,238 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:51,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 885 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 14:45:51,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-13 14:45:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2024-11-13 14:45:51,257 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2024-11-13 14:45:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:51,258 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2024-11-13 14:45:51,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2024-11-13 14:45:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 14:45:51,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:51,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:51,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:45:51,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:51,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1856068084, now seen corresponding path program 1 times [2024-11-13 14:45:51,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186071308] [2024-11-13 14:45:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:51,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:51,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186071308] [2024-11-13 14:45:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186071308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:51,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:51,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:51,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192545825] [2024-11-13 14:45:51,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:51,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:51,540 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:51,633 INFO L93 Difference]: Finished difference Result 265 states and 424 transitions. [2024-11-13 14:45:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:51,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-13 14:45:51,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:51,636 INFO L225 Difference]: With dead ends: 265 [2024-11-13 14:45:51,636 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:45:51,636 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 [2024-11-13 14:45:51,640 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 97 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:51,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 344 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:45:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2024-11-13 14:45:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.553191489361702) internal successors, (292), 188 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 292 transitions. [2024-11-13 14:45:51,663 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 292 transitions. Word has length 66 [2024-11-13 14:45:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:51,663 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 292 transitions. [2024-11-13 14:45:51,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 292 transitions. [2024-11-13 14:45:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:45:51,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:51,667 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] [2024-11-13 14:45:51,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:45:51,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:51,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -731490430, now seen corresponding path program 1 times [2024-11-13 14:45:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317565907] [2024-11-13 14:45:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317565907] [2024-11-13 14:45:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317565907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:51,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:51,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510202094] [2024-11-13 14:45:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:51,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:51,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:51,889 INFO L87 Difference]: Start difference. First operand 189 states and 292 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:51,950 INFO L93 Difference]: Finished difference Result 431 states and 692 transitions. [2024-11-13 14:45:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:51,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 14:45:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:51,952 INFO L225 Difference]: With dead ends: 431 [2024-11-13 14:45:51,952 INFO L226 Difference]: Without dead ends: 302 [2024-11-13 14:45:51,953 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 [2024-11-13 14:45:51,957 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 99 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 365 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 [2024-11-13 14:45:51,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 365 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-13 14:45:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 298. [2024-11-13 14:45:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.5858585858585859) internal successors, (471), 297 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 471 transitions. [2024-11-13 14:45:51,983 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 471 transitions. Word has length 68 [2024-11-13 14:45:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:51,983 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 471 transitions. [2024-11-13 14:45:51,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 471 transitions. [2024-11-13 14:45:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 14:45:51,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:51,986 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:51,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:45:51,989 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:51,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1929972208, now seen corresponding path program 1 times [2024-11-13 14:45:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:51,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110511295] [2024-11-13 14:45:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:51,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110511295] [2024-11-13 14:45:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110511295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:52,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:52,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528595988] [2024-11-13 14:45:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:52,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:52,231 INFO L87 Difference]: Start difference. First operand 298 states and 471 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:52,300 INFO L93 Difference]: Finished difference Result 742 states and 1201 transitions. [2024-11-13 14:45:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 14:45:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:52,304 INFO L225 Difference]: With dead ends: 742 [2024-11-13 14:45:52,306 INFO L226 Difference]: Without dead ends: 504 [2024-11-13 14:45:52,308 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 [2024-11-13 14:45:52,311 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 93 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 366 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 [2024-11-13 14:45:52,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 366 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-13 14:45:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-13 14:45:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.5995975855130784) internal successors, (795), 497 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 795 transitions. [2024-11-13 14:45:52,345 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 795 transitions. Word has length 70 [2024-11-13 14:45:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:52,346 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 795 transitions. [2024-11-13 14:45:52,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 795 transitions. [2024-11-13 14:45:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 14:45:52,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:52,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:52,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:45:52,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:52,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1287047778, now seen corresponding path program 1 times [2024-11-13 14:45:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:52,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372587528] [2024-11-13 14:45:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:52,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:52,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372587528] [2024-11-13 14:45:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372587528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:52,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:52,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:45:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943793729] [2024-11-13 14:45:52,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:52,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:45:52,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:45:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:52,575 INFO L87 Difference]: Start difference. First operand 498 states and 795 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:52,839 INFO L93 Difference]: Finished difference Result 2494 states and 4085 transitions. [2024-11-13 14:45:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:45:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-13 14:45:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:52,849 INFO L225 Difference]: With dead ends: 2494 [2024-11-13 14:45:52,852 INFO L226 Difference]: Without dead ends: 2056 [2024-11-13 14:45:52,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:45:52,855 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 812 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:52,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1144 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:45:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2024-11-13 14:45:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 918. [2024-11-13 14:45:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.612868047982552) internal successors, (1479), 917 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1479 transitions. [2024-11-13 14:45:52,936 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1479 transitions. Word has length 72 [2024-11-13 14:45:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:52,938 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1479 transitions. [2024-11-13 14:45:52,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1479 transitions. [2024-11-13 14:45:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 14:45:52,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:52,943 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:52,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:45:52,944 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:52,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1128359232, now seen corresponding path program 1 times [2024-11-13 14:45:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792605185] [2024-11-13 14:45:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792605185] [2024-11-13 14:45:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792605185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:53,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:53,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:45:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182852129] [2024-11-13 14:45:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:53,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:45:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:45:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:45:53,127 INFO L87 Difference]: Start difference. First operand 918 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:53,296 INFO L93 Difference]: Finished difference Result 3318 states and 5402 transitions. [2024-11-13 14:45:53,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:45:53,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-13 14:45:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:53,307 INFO L225 Difference]: With dead ends: 3318 [2024-11-13 14:45:53,307 INFO L226 Difference]: Without dead ends: 2460 [2024-11-13 14:45:53,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:53,310 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 359 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:53,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 651 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2024-11-13 14:45:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1680. [2024-11-13 14:45:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 1.614651578320429) internal successors, (2711), 1679 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2711 transitions. [2024-11-13 14:45:53,390 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2711 transitions. Word has length 73 [2024-11-13 14:45:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:53,390 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 2711 transitions. [2024-11-13 14:45:53,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2711 transitions. [2024-11-13 14:45:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:45:53,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:53,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:53,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:45:53,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:53,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1134430443, now seen corresponding path program 1 times [2024-11-13 14:45:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:53,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417239845] [2024-11-13 14:45:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:53,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417239845] [2024-11-13 14:45:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417239845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:53,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:53,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:45:53,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876696603] [2024-11-13 14:45:53,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:53,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:45:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:53,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:45:53,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:45:53,586 INFO L87 Difference]: Start difference. First operand 1680 states and 2711 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:53,777 INFO L93 Difference]: Finished difference Result 4944 states and 8046 transitions. [2024-11-13 14:45:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:45:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-13 14:45:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:53,794 INFO L225 Difference]: With dead ends: 4944 [2024-11-13 14:45:53,795 INFO L226 Difference]: Without dead ends: 3324 [2024-11-13 14:45:53,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:53,798 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 357 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:53,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 652 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2024-11-13 14:45:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 2486. [2024-11-13 14:45:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.6116700201207244) internal successors, (4005), 2485 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4005 transitions. [2024-11-13 14:45:53,911 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4005 transitions. Word has length 74 [2024-11-13 14:45:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:53,912 INFO L471 AbstractCegarLoop]: Abstraction has 2486 states and 4005 transitions. [2024-11-13 14:45:53,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4005 transitions. [2024-11-13 14:45:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 14:45:53,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:53,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:53,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:45:53,915 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:53,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1902538007, now seen corresponding path program 1 times [2024-11-13 14:45:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348341673] [2024-11-13 14:45:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348341673] [2024-11-13 14:45:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348341673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:54,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:54,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:45:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956862776] [2024-11-13 14:45:54,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:54,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:45:54,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:45:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:45:54,069 INFO L87 Difference]: Start difference. First operand 2486 states and 4005 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:54,261 INFO L93 Difference]: Finished difference Result 7296 states and 11834 transitions. [2024-11-13 14:45:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:45:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-13 14:45:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:54,281 INFO L225 Difference]: With dead ends: 7296 [2024-11-13 14:45:54,282 INFO L226 Difference]: Without dead ends: 4870 [2024-11-13 14:45:54,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:54,286 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 355 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:54,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2024-11-13 14:45:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 3656. [2024-11-13 14:45:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 1.6073871409028728) internal successors, (5875), 3655 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5875 transitions. [2024-11-13 14:45:54,460 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5875 transitions. Word has length 75 [2024-11-13 14:45:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:54,460 INFO L471 AbstractCegarLoop]: Abstraction has 3656 states and 5875 transitions. [2024-11-13 14:45:54,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5875 transitions. [2024-11-13 14:45:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:45:54,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:54,462 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:54,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:45:54,463 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:54,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash -326880713, now seen corresponding path program 1 times [2024-11-13 14:45:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:54,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277791588] [2024-11-13 14:45:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:54,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277791588] [2024-11-13 14:45:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277791588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:54,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553723522] [2024-11-13 14:45:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:54,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:54,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:54,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:54,552 INFO L87 Difference]: Start difference. First operand 3656 states and 5875 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:54,684 INFO L93 Difference]: Finished difference Result 8284 states and 13306 transitions. [2024-11-13 14:45:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:54,684 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 14:45:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:54,733 INFO L225 Difference]: With dead ends: 8284 [2024-11-13 14:45:54,733 INFO L226 Difference]: Without dead ends: 5684 [2024-11-13 14:45:54,736 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 [2024-11-13 14:45:54,737 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 92 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:54,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2024-11-13 14:45:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5682. [2024-11-13 14:45:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5682 states, 5681 states have (on average 1.588804787889456) internal successors, (9026), 5681 states have internal predecessors, (9026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5682 states to 5682 states and 9026 transitions. [2024-11-13 14:45:54,987 INFO L78 Accepts]: Start accepts. Automaton has 5682 states and 9026 transitions. Word has length 76 [2024-11-13 14:45:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:54,988 INFO L471 AbstractCegarLoop]: Abstraction has 5682 states and 9026 transitions. [2024-11-13 14:45:54,988 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5682 states and 9026 transitions. [2024-11-13 14:45:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:45:54,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:54,989 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:54,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:45:54,989 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:54,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1885783927, now seen corresponding path program 1 times [2024-11-13 14:45:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:54,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63031773] [2024-11-13 14:45:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:54,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:55,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:55,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63031773] [2024-11-13 14:45:55,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63031773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:55,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:55,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:55,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648330966] [2024-11-13 14:45:55,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:55,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:55,108 INFO L87 Difference]: Start difference. First operand 5682 states and 9026 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:55,353 INFO L93 Difference]: Finished difference Result 12456 states and 19800 transitions. [2024-11-13 14:45:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:55,354 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 14:45:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:55,407 INFO L225 Difference]: With dead ends: 12456 [2024-11-13 14:45:55,407 INFO L226 Difference]: Without dead ends: 8428 [2024-11-13 14:45:55,414 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 [2024-11-13 14:45:55,416 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 98 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:55,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8428 states. [2024-11-13 14:45:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8428 to 8426. [2024-11-13 14:45:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8426 states, 8425 states have (on average 1.5717507418397627) internal successors, (13242), 8425 states have internal predecessors, (13242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 13242 transitions. [2024-11-13 14:45:55,759 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 13242 transitions. Word has length 76 [2024-11-13 14:45:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:55,759 INFO L471 AbstractCegarLoop]: Abstraction has 8426 states and 13242 transitions. [2024-11-13 14:45:55,760 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 13242 transitions. [2024-11-13 14:45:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:45:55,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:55,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:55,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:45:55,762 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:55,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:55,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1020554423, now seen corresponding path program 1 times [2024-11-13 14:45:55,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:55,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618233432] [2024-11-13 14:45:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:55,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618233432] [2024-11-13 14:45:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618233432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788462417] [2024-11-13 14:45:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:55,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:55,857 INFO L87 Difference]: Start difference. First operand 8426 states and 13242 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:56,132 INFO L93 Difference]: Finished difference Result 20215 states and 31930 transitions. [2024-11-13 14:45:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:56,133 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 14:45:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:56,165 INFO L225 Difference]: With dead ends: 20215 [2024-11-13 14:45:56,165 INFO L226 Difference]: Without dead ends: 11867 [2024-11-13 14:45:56,175 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 [2024-11-13 14:45:56,177 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:56,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 461 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2024-11-13 14:45:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 11865. [2024-11-13 14:45:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11865 states, 11864 states have (on average 1.5761968981793661) internal successors, (18700), 11864 states have internal predecessors, (18700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 18700 transitions. [2024-11-13 14:45:56,631 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 18700 transitions. Word has length 76 [2024-11-13 14:45:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:56,631 INFO L471 AbstractCegarLoop]: Abstraction has 11865 states and 18700 transitions. [2024-11-13 14:45:56,632 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 18700 transitions. [2024-11-13 14:45:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:45:56,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:56,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:56,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:45:56,634 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:56,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash 850403503, now seen corresponding path program 1 times [2024-11-13 14:45:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:56,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021943659] [2024-11-13 14:45:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:57,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021943659] [2024-11-13 14:45:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021943659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:57,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:57,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:45:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820972301] [2024-11-13 14:45:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:57,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:45:57,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:45:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:57,007 INFO L87 Difference]: Start difference. First operand 11865 states and 18700 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:57,387 INFO L93 Difference]: Finished difference Result 23654 states and 37297 transitions. [2024-11-13 14:45:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:45:57,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 14:45:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:57,423 INFO L225 Difference]: With dead ends: 23654 [2024-11-13 14:45:57,423 INFO L226 Difference]: Without dead ends: 11867 [2024-11-13 14:45:57,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:45:57,439 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 189 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:57,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 538 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2024-11-13 14:45:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 11865. [2024-11-13 14:45:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11865 states, 11864 states have (on average 1.563553607552259) internal successors, (18550), 11864 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 18550 transitions. [2024-11-13 14:45:57,892 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 18550 transitions. Word has length 77 [2024-11-13 14:45:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:57,892 INFO L471 AbstractCegarLoop]: Abstraction has 11865 states and 18550 transitions. [2024-11-13 14:45:57,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 18550 transitions. [2024-11-13 14:45:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:45:57,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:57,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:57,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:45:57,894 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:57,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash 61655256, now seen corresponding path program 1 times [2024-11-13 14:45:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:57,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076226761] [2024-11-13 14:45:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076226761] [2024-11-13 14:45:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076226761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:45:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667793718] [2024-11-13 14:45:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:45:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:45:58,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:58,160 INFO L87 Difference]: Start difference. First operand 11865 states and 18550 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:58,712 INFO L93 Difference]: Finished difference Result 34237 states and 53673 transitions. [2024-11-13 14:45:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:45:58,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-13 14:45:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:58,775 INFO L225 Difference]: With dead ends: 34237 [2024-11-13 14:45:58,775 INFO L226 Difference]: Without dead ends: 22450 [2024-11-13 14:45:58,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:45:58,791 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 93 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:58,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 714 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:45:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22450 states. [2024-11-13 14:45:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22450 to 22448. [2024-11-13 14:45:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22448 states, 22447 states have (on average 1.5508531206842786) internal successors, (34812), 22447 states have internal predecessors, (34812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22448 states to 22448 states and 34812 transitions. [2024-11-13 14:45:59,523 INFO L78 Accepts]: Start accepts. Automaton has 22448 states and 34812 transitions. Word has length 80 [2024-11-13 14:45:59,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:59,524 INFO L471 AbstractCegarLoop]: Abstraction has 22448 states and 34812 transitions. [2024-11-13 14:45:59,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22448 states and 34812 transitions. [2024-11-13 14:45:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:45:59,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:59,525 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:59,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:45:59,525 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:59,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1482737304, now seen corresponding path program 1 times [2024-11-13 14:45:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522933271] [2024-11-13 14:45:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:59,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:46:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522933271] [2024-11-13 14:46:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522933271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:46:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958053442] [2024-11-13 14:46:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:00,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:46:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:46:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:46:00,077 INFO L87 Difference]: Start difference. First operand 22448 states and 34812 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:00,501 INFO L93 Difference]: Finished difference Result 23611 states and 36361 transitions. [2024-11-13 14:46:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:46:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-13 14:46:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:00,569 INFO L225 Difference]: With dead ends: 23611 [2024-11-13 14:46:00,570 INFO L226 Difference]: Without dead ends: 23609 [2024-11-13 14:46:00,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:46:00,579 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:00,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1354 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23609 states. [2024-11-13 14:46:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23609 to 23609. [2024-11-13 14:46:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 23608 states have (on average 1.5233819044391732) internal successors, (35964), 23608 states have internal predecessors, (35964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 35964 transitions. [2024-11-13 14:46:01,222 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 35964 transitions. Word has length 81 [2024-11-13 14:46:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:01,222 INFO L471 AbstractCegarLoop]: Abstraction has 23609 states and 35964 transitions. [2024-11-13 14:46:01,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 35964 transitions. [2024-11-13 14:46:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 14:46:01,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:01,226 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:01,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:46:01,226 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:01,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 969366049, now seen corresponding path program 1 times [2024-11-13 14:46:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592259342] [2024-11-13 14:46:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:46:01,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592259342] [2024-11-13 14:46:01,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592259342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:01,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:01,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:46:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610831059] [2024-11-13 14:46:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:01,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:46:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:46:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:46:01,445 INFO L87 Difference]: Start difference. First operand 23609 states and 35964 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:02,160 INFO L93 Difference]: Finished difference Result 59107 states and 90255 transitions. [2024-11-13 14:46:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:46:02,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-13 14:46:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:02,291 INFO L225 Difference]: With dead ends: 59107 [2024-11-13 14:46:02,292 INFO L226 Difference]: Without dead ends: 48161 [2024-11-13 14:46:02,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:46:02,308 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 452 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:02,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 826 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48161 states. [2024-11-13 14:46:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48161 to 37091. [2024-11-13 14:46:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37091 states, 37090 states have (on average 1.5195740091668914) internal successors, (56361), 37090 states have internal predecessors, (56361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37091 states to 37091 states and 56361 transitions. [2024-11-13 14:46:03,209 INFO L78 Accepts]: Start accepts. Automaton has 37091 states and 56361 transitions. Word has length 109 [2024-11-13 14:46:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:03,211 INFO L471 AbstractCegarLoop]: Abstraction has 37091 states and 56361 transitions. [2024-11-13 14:46:03,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 37091 states and 56361 transitions. [2024-11-13 14:46:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 14:46:03,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:03,214 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:03,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:46:03,214 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:03,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1112936607, now seen corresponding path program 1 times [2024-11-13 14:46:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:03,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292212915] [2024-11-13 14:46:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:46:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:03,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292212915] [2024-11-13 14:46:03,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292212915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:03,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:03,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:46:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475868747] [2024-11-13 14:46:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:03,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:46:03,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:46:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:46:03,416 INFO L87 Difference]: Start difference. First operand 37091 states and 56361 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:04,366 INFO L93 Difference]: Finished difference Result 63523 states and 97023 transitions. [2024-11-13 14:46:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:46:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-13 14:46:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:04,495 INFO L225 Difference]: With dead ends: 63523 [2024-11-13 14:46:04,495 INFO L226 Difference]: Without dead ends: 52577 [2024-11-13 14:46:04,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:46:04,520 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 449 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:04,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 879 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52577 states. [2024-11-13 14:46:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52577 to 50355. [2024-11-13 14:46:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50355 states, 50354 states have (on average 1.5203360209715215) internal successors, (76555), 50354 states have internal predecessors, (76555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50355 states to 50355 states and 76555 transitions. [2024-11-13 14:46:05,848 INFO L78 Accepts]: Start accepts. Automaton has 50355 states and 76555 transitions. Word has length 109 [2024-11-13 14:46:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:05,849 INFO L471 AbstractCegarLoop]: Abstraction has 50355 states and 76555 transitions. [2024-11-13 14:46:05,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:05,849 INFO L276 IsEmpty]: Start isEmpty. Operand 50355 states and 76555 transitions. [2024-11-13 14:46:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 14:46:05,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:05,852 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:05,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:46:05,852 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:05,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1978166111, now seen corresponding path program 1 times [2024-11-13 14:46:05,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:05,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193692518] [2024-11-13 14:46:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:05,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:46:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193692518] [2024-11-13 14:46:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193692518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:46:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922881681] [2024-11-13 14:46:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:06,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:46:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:46:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:46:06,024 INFO L87 Difference]: Start difference. First operand 50355 states and 76555 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:07,223 INFO L93 Difference]: Finished difference Result 74957 states and 114494 transitions. [2024-11-13 14:46:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:46:07,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-13 14:46:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:07,358 INFO L225 Difference]: With dead ends: 74957 [2024-11-13 14:46:07,359 INFO L226 Difference]: Without dead ends: 61345 [2024-11-13 14:46:07,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:46:07,379 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 443 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:07,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 923 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61345 states. [2024-11-13 14:46:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61345 to 59123. [2024-11-13 14:46:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59123 states, 59122 states have (on average 1.5219546023476878) internal successors, (89981), 59122 states have internal predecessors, (89981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59123 states to 59123 states and 89981 transitions. [2024-11-13 14:46:08,816 INFO L78 Accepts]: Start accepts. Automaton has 59123 states and 89981 transitions. Word has length 109 [2024-11-13 14:46:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:08,816 INFO L471 AbstractCegarLoop]: Abstraction has 59123 states and 89981 transitions. [2024-11-13 14:46:08,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 59123 states and 89981 transitions. [2024-11-13 14:46:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 14:46:08,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:08,820 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:08,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:46:08,820 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:08,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1178527389, now seen corresponding path program 1 times [2024-11-13 14:46:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591472526] [2024-11-13 14:46:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:46:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:08,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591472526] [2024-11-13 14:46:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591472526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:46:08,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444909356] [2024-11-13 14:46:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:08,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:46:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:46:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:46:08,965 INFO L87 Difference]: Start difference. First operand 59123 states and 89981 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:10,155 INFO L93 Difference]: Finished difference Result 101592 states and 155179 transitions. [2024-11-13 14:46:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:46:10,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-13 14:46:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:10,319 INFO L225 Difference]: With dead ends: 101592 [2024-11-13 14:46:10,319 INFO L226 Difference]: Without dead ends: 79212 [2024-11-13 14:46:10,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:46:10,341 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 187 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:10,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 678 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79212 states. [2024-11-13 14:46:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79212 to 76992. [2024-11-13 14:46:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76992 states, 76991 states have (on average 1.519671130391864) internal successors, (117001), 76991 states have internal predecessors, (117001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76992 states to 76992 states and 117001 transitions. [2024-11-13 14:46:11,922 INFO L78 Accepts]: Start accepts. Automaton has 76992 states and 117001 transitions. Word has length 110 [2024-11-13 14:46:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:11,923 INFO L471 AbstractCegarLoop]: Abstraction has 76992 states and 117001 transitions. [2024-11-13 14:46:11,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 76992 states and 117001 transitions. [2024-11-13 14:46:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 14:46:11,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:11,925 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:11,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:46:11,925 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:11,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1601229215, now seen corresponding path program 1 times [2024-11-13 14:46:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41657535] [2024-11-13 14:46:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:46:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41657535] [2024-11-13 14:46:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41657535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:12,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387263870] [2024-11-13 14:46:12,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:12,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:12,014 INFO L87 Difference]: Start difference. First operand 76992 states and 117001 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:13,944 INFO L93 Difference]: Finished difference Result 176286 states and 268200 transitions. [2024-11-13 14:46:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:13,945 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-13 14:46:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:14,138 INFO L225 Difference]: With dead ends: 176286 [2024-11-13 14:46:14,138 INFO L226 Difference]: Without dead ends: 135992 [2024-11-13 14:46:14,184 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 [2024-11-13 14:46:14,185 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 81 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:14,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 368 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135992 states. [2024-11-13 14:46:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135992 to 135714. [2024-11-13 14:46:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135714 states, 135713 states have (on average 1.516988055676317) internal successors, (205875), 135713 states have internal predecessors, (205875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135714 states to 135714 states and 205875 transitions. [2024-11-13 14:46:16,878 INFO L78 Accepts]: Start accepts. Automaton has 135714 states and 205875 transitions. Word has length 110 [2024-11-13 14:46:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:16,878 INFO L471 AbstractCegarLoop]: Abstraction has 135714 states and 205875 transitions. [2024-11-13 14:46:16,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 135714 states and 205875 transitions. [2024-11-13 14:46:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 14:46:16,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:16,882 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:16,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:46:16,882 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:16,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1317319656, now seen corresponding path program 1 times [2024-11-13 14:46:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:16,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673159310] [2024-11-13 14:46:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:16,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:46:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673159310] [2024-11-13 14:46:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673159310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:46:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941462649] [2024-11-13 14:46:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:17,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:46:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:46:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:46:17,094 INFO L87 Difference]: Start difference. First operand 135714 states and 205875 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:19,214 INFO L93 Difference]: Finished difference Result 206334 states and 314440 transitions. [2024-11-13 14:46:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:46:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-13 14:46:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:19,419 INFO L225 Difference]: With dead ends: 206334 [2024-11-13 14:46:19,419 INFO L226 Difference]: Without dead ends: 167968 [2024-11-13 14:46:19,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:46:19,455 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 192 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:19,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 675 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:19,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167968 states. [2024-11-13 14:46:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167968 to 159116. [2024-11-13 14:46:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159116 states, 159115 states have (on average 1.5164566508500141) internal successors, (241291), 159115 states have internal predecessors, (241291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159116 states to 159116 states and 241291 transitions. [2024-11-13 14:46:22,870 INFO L78 Accepts]: Start accepts. Automaton has 159116 states and 241291 transitions. Word has length 111 [2024-11-13 14:46:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:22,870 INFO L471 AbstractCegarLoop]: Abstraction has 159116 states and 241291 transitions. [2024-11-13 14:46:22,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 159116 states and 241291 transitions. [2024-11-13 14:46:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 14:46:22,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:22,873 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:22,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 14:46:22,873 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:22,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1956579286, now seen corresponding path program 1 times [2024-11-13 14:46:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:22,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441105889] [2024-11-13 14:46:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:46:22,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:22,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441105889] [2024-11-13 14:46:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441105889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:22,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:22,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241269957] [2024-11-13 14:46:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:22,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:22,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:22,965 INFO L87 Difference]: Start difference. First operand 159116 states and 241291 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:26,291 INFO L93 Difference]: Finished difference Result 336554 states and 511577 transitions. [2024-11-13 14:46:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:26,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-13 14:46:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:26,664 INFO L225 Difference]: With dead ends: 336554 [2024-11-13 14:46:26,664 INFO L226 Difference]: Without dead ends: 261260 [2024-11-13 14:46:26,719 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 [2024-11-13 14:46:26,721 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:26,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 367 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:46:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261260 states. [2024-11-13 14:46:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261260 to 260526. [2024-11-13 14:46:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260526 states, 260525 states have (on average 1.514422800115152) internal successors, (394545), 260525 states have internal predecessors, (394545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260526 states to 260526 states and 394545 transitions. [2024-11-13 14:46:32,468 INFO L78 Accepts]: Start accepts. Automaton has 260526 states and 394545 transitions. Word has length 111 [2024-11-13 14:46:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:32,468 INFO L471 AbstractCegarLoop]: Abstraction has 260526 states and 394545 transitions. [2024-11-13 14:46:32,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 260526 states and 394545 transitions. [2024-11-13 14:46:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 14:46:32,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:32,471 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:32,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 14:46:32,471 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash -694621549, now seen corresponding path program 1 times [2024-11-13 14:46:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802252740] [2024-11-13 14:46:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:46:32,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:32,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802252740] [2024-11-13 14:46:32,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802252740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:32,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:32,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:32,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044403673] [2024-11-13 14:46:32,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:32,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:32,549 INFO L87 Difference]: Start difference. First operand 260526 states and 394545 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)