./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.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_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/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_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/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_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/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 308b0e1adc3ae7348985993203af7f0b3a83352e3d43ffbdb40ed727e63d4081 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:02:50,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:02:50,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:02:51,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:02:51,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:02:51,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:02:51,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:02:51,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:02:51,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:02:51,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:02:51,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:02:51,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:02:51,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:02:51,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:02:51,048 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:02:51,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:02:51,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:02:51,049 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:02:51,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:02:51,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:02:51,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:02:51,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:02:51,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:02:51,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:02:51,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:02:51,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:02:51,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:02:51,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:02:51,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:02:51,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:02:51,052 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:02:51,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:02:51,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:02:51,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:02:51,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:02:51,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:02:51,053 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_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/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 -> 308b0e1adc3ae7348985993203af7f0b3a83352e3d43ffbdb40ed727e63d4081 [2024-11-13 14:02:51,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:02:51,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:02:51,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:02:51,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:02:51,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:02:51,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c Unable to find full path for "g++" [2024-11-13 14:02:53,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:02:53,482 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:02:53,485 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2024-11-13 14:02:53,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/data/b8197fcd9/f25810152d6744ee954e663b0dd6b7b5/FLAG0e0fcdbdf [2024-11-13 14:02:53,523 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/data/b8197fcd9/f25810152d6744ee954e663b0dd6b7b5 [2024-11-13 14:02:53,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:02:53,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:02:53,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:02:53,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:02:53,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:02:53,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:53,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c6b441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53, skipping insertion in model container [2024-11-13 14:02:53,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:53,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:02:53,840 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_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c[9433,9446] [2024-11-13 14:02:53,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:02:53,859 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:02:53,940 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_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c[9433,9446] [2024-11-13 14:02:53,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:02:53,959 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:02:53,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53 WrapperNode [2024-11-13 14:02:53,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:02:53,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:02:53,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:02:53,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:02:53,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:53,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,009 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 315 [2024-11-13 14:02:54,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:02:54,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:02:54,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:02:54,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:02:54,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,022 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,035 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 14:02:54,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:02:54,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:02:54,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:02:54,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:02:54,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (1/1) ... [2024-11-13 14:02:54,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:02:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:54,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:02:54,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:02:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:02:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:02:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:02:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:02:54,246 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:02:54,248 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:02:54,778 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-13 14:02:54,778 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:02:54,793 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:02:54,795 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:02:54,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:02:54 BoogieIcfgContainer [2024-11-13 14:02:54,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:02:54,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:02:54,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:02:54,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:02:54,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:02:53" (1/3) ... [2024-11-13 14:02:54,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113cbd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:02:54, skipping insertion in model container [2024-11-13 14:02:54,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:02:53" (2/3) ... [2024-11-13 14:02:54,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113cbd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:02:54, skipping insertion in model container [2024-11-13 14:02:54,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:02:54" (3/3) ... [2024-11-13 14:02:54,806 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2024-11-13 14:02:54,823 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:02:54,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c that has 1 procedures, 84 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:02:54,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:02:54,902 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;@a5dac92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:02:54,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:02:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7317073170731707) internal successors, (142), 83 states have internal predecessors, (142), 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 14:02:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:02:54,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:54,914 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] [2024-11-13 14:02:54,915 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:54,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1105352417, now seen corresponding path program 1 times [2024-11-13 14:02:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497040765] [2024-11-13 14:02:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:55,188 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 14:02:55,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497040765] [2024-11-13 14:02:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497040765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:55,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:55,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:02:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387298414] [2024-11-13 14:02:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:55,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:02:55,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:02:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:02:55,224 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7317073170731707) internal successors, (142), 83 states have internal predecessors, (142), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 14:02:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:55,243 INFO L93 Difference]: Finished difference Result 139 states and 230 transitions. [2024-11-13 14:02:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:02:55,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2024-11-13 14:02:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:55,253 INFO L225 Difference]: With dead ends: 139 [2024-11-13 14:02:55,253 INFO L226 Difference]: Without dead ends: 80 [2024-11-13 14:02:55,260 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 14:02:55,263 INFO L432 NwaCegarLoop]: 139 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, 139 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 14:02:55,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-13 14:02:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-13 14:02:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.7088607594936709) internal successors, (135), 79 states have internal predecessors, (135), 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 14:02:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 135 transitions. [2024-11-13 14:02:55,297 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 135 transitions. Word has length 29 [2024-11-13 14:02:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:55,297 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 135 transitions. [2024-11-13 14:02:55,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 14:02:55,298 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 135 transitions. [2024-11-13 14:02:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:02:55,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:55,299 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] [2024-11-13 14:02:55,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:02:55,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:55,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1239365923, now seen corresponding path program 1 times [2024-11-13 14:02:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:55,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620675892] [2024-11-13 14:02:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:55,596 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 14:02:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620675892] [2024-11-13 14:02:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620675892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:02:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124182656] [2024-11-13 14:02:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:55,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:02:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:02:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:02:55,600 INFO L87 Difference]: Start difference. First operand 80 states and 135 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 14:02:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:55,705 INFO L93 Difference]: Finished difference Result 184 states and 301 transitions. [2024-11-13 14:02:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:02:55,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2024-11-13 14:02:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:55,709 INFO L225 Difference]: With dead ends: 184 [2024-11-13 14:02:55,710 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 14:02:55,711 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 14:02:55,712 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 80 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:55,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 494 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:02:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 14:02:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 80. [2024-11-13 14:02:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 79 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) [2024-11-13 14:02:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2024-11-13 14:02:55,728 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 29 [2024-11-13 14:02:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:55,729 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2024-11-13 14:02:55,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 14:02:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2024-11-13 14:02:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:02:55,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:55,730 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] [2024-11-13 14:02:55,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:02:55,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -250329386, now seen corresponding path program 1 times [2024-11-13 14:02:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993022346] [2024-11-13 14:02:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:55,967 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 14:02:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993022346] [2024-11-13 14:02:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993022346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:55,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707106464] [2024-11-13 14:02:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:55,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:55,971 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 14:02:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:56,009 INFO L93 Difference]: Finished difference Result 172 states and 259 transitions. [2024-11-13 14:02:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-11-13 14:02:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:56,014 INFO L225 Difference]: With dead ends: 172 [2024-11-13 14:02:56,015 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 14:02:56,015 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 14:02:56,016 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 65 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 239 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 14:02:56,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 239 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 14:02:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-11-13 14:02:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4789915966386555) internal successors, (176), 119 states have internal predecessors, (176), 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 14:02:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2024-11-13 14:02:56,031 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 52 [2024-11-13 14:02:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:56,031 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2024-11-13 14:02:56,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 14:02:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2024-11-13 14:02:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:02:56,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:56,033 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] [2024-11-13 14:02:56,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:02:56,033 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:56,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 928101271, now seen corresponding path program 1 times [2024-11-13 14:02:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:56,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981656299] [2024-11-13 14:02:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:56,336 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 14:02:56,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:56,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981656299] [2024-11-13 14:02:56,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981656299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:56,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:56,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:02:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843790133] [2024-11-13 14:02:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:56,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:02:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:02:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:02:56,338 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 14:02:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:56,488 INFO L93 Difference]: Finished difference Result 570 states and 906 transitions. [2024-11-13 14:02:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:02:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2024-11-13 14:02:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:56,492 INFO L225 Difference]: With dead ends: 570 [2024-11-13 14:02:56,496 INFO L226 Difference]: Without dead ends: 480 [2024-11-13 14:02:56,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:02:56,497 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 782 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:56,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 572 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:02:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-13 14:02:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 208. [2024-11-13 14:02:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5314009661835748) internal successors, (317), 207 states have internal predecessors, (317), 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 14:02:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 317 transitions. [2024-11-13 14:02:56,528 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 317 transitions. Word has length 52 [2024-11-13 14:02:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:56,531 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 317 transitions. [2024-11-13 14:02:56,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 14:02:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 317 transitions. [2024-11-13 14:02:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:02:56,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:56,533 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] [2024-11-13 14:02:56,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:02:56,533 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:56,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1676955048, now seen corresponding path program 1 times [2024-11-13 14:02:56,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:56,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117407268] [2024-11-13 14:02:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:57,034 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 14:02:57,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117407268] [2024-11-13 14:02:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117407268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:57,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:02:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005517349] [2024-11-13 14:02:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:57,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:02:57,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:02:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:02:57,039 INFO L87 Difference]: Start difference. First operand 208 states and 317 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 14:02:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:57,121 INFO L93 Difference]: Finished difference Result 222 states and 334 transitions. [2024-11-13 14:02:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:02:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2024-11-13 14:02:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:57,123 INFO L225 Difference]: With dead ends: 222 [2024-11-13 14:02:57,124 INFO L226 Difference]: Without dead ends: 220 [2024-11-13 14:02:57,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:02:57,125 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:57,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 720 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:02:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-13 14:02:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-13 14:02:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.5022831050228311) internal successors, (329), 219 states have internal predecessors, (329), 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 14:02:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 329 transitions. [2024-11-13 14:02:57,145 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 329 transitions. Word has length 53 [2024-11-13 14:02:57,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:57,146 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 329 transitions. [2024-11-13 14:02:57,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 14:02:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 329 transitions. [2024-11-13 14:02:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:02:57,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:57,153 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] [2024-11-13 14:02:57,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:02:57,153 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:57,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash -393420401, now seen corresponding path program 1 times [2024-11-13 14:02:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547518422] [2024-11-13 14:02:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:57,292 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 14:02:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547518422] [2024-11-13 14:02:57,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547518422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:57,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144845489] [2024-11-13 14:02:57,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:57,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:57,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:57,295 INFO L87 Difference]: Start difference. First operand 220 states and 329 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 14:02:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:57,328 INFO L93 Difference]: Finished difference Result 570 states and 877 transitions. [2024-11-13 14:02:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:57,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2024-11-13 14:02:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:57,331 INFO L225 Difference]: With dead ends: 570 [2024-11-13 14:02:57,333 INFO L226 Difference]: Without dead ends: 380 [2024-11-13 14:02:57,334 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 14:02:57,337 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:57,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 189 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-13 14:02:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 378. [2024-11-13 14:02:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.5198938992042441) internal successors, (573), 377 states have internal predecessors, (573), 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 14:02:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 573 transitions. [2024-11-13 14:02:57,364 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 573 transitions. Word has length 54 [2024-11-13 14:02:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:57,364 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 573 transitions. [2024-11-13 14:02:57,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 14:02:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 573 transitions. [2024-11-13 14:02:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:02:57,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:57,370 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] [2024-11-13 14:02:57,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:02:57,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:57,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash 25020814, now seen corresponding path program 1 times [2024-11-13 14:02:57,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:57,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263715017] [2024-11-13 14:02:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:57,478 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 14:02:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263715017] [2024-11-13 14:02:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263715017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:57,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302953476] [2024-11-13 14:02:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:57,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:57,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:57,480 INFO L87 Difference]: Start difference. First operand 378 states and 573 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 14:02:57,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:57,515 INFO L93 Difference]: Finished difference Result 728 states and 1118 transitions. [2024-11-13 14:02:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:57,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2024-11-13 14:02:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:57,519 INFO L225 Difference]: With dead ends: 728 [2024-11-13 14:02:57,519 INFO L226 Difference]: Without dead ends: 538 [2024-11-13 14:02:57,519 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 14:02:57,520 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 69 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 249 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 14:02:57,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 249 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-13 14:02:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2024-11-13 14:02:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.519626168224299) internal successors, (813), 535 states have internal predecessors, (813), 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 14:02:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 813 transitions. [2024-11-13 14:02:57,554 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 813 transitions. Word has length 54 [2024-11-13 14:02:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:57,555 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 813 transitions. [2024-11-13 14:02:57,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 14:02:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 813 transitions. [2024-11-13 14:02:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:02:57,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:57,556 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] [2024-11-13 14:02:57,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:02:57,556 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:57,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash -345241167, now seen corresponding path program 1 times [2024-11-13 14:02:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:57,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265662008] [2024-11-13 14:02:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:57,653 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 14:02:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265662008] [2024-11-13 14:02:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265662008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:57,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:57,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986460991] [2024-11-13 14:02:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:57,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:57,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:57,654 INFO L87 Difference]: Start difference. First operand 536 states and 813 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 14:02:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:57,702 INFO L93 Difference]: Finished difference Result 1448 states and 2207 transitions. [2024-11-13 14:02:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-11-13 14:02:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:57,707 INFO L225 Difference]: With dead ends: 1448 [2024-11-13 14:02:57,708 INFO L226 Difference]: Without dead ends: 944 [2024-11-13 14:02:57,709 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 14:02:57,710 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 57 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 233 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 14:02:57,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:57,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-11-13 14:02:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2024-11-13 14:02:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 1.5015940488841657) internal successors, (1413), 941 states have internal predecessors, (1413), 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 14:02:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1413 transitions. [2024-11-13 14:02:57,774 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1413 transitions. Word has length 55 [2024-11-13 14:02:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:57,774 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1413 transitions. [2024-11-13 14:02:57,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 14:02:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1413 transitions. [2024-11-13 14:02:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:02:57,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:57,775 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] [2024-11-13 14:02:57,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:02:57,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:57,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2145930095, now seen corresponding path program 1 times [2024-11-13 14:02:57,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:57,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361735362] [2024-11-13 14:02:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:57,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:57,868 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 14:02:57,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:57,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361735362] [2024-11-13 14:02:57,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361735362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:57,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:57,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:57,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711917208] [2024-11-13 14:02:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:57,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:57,870 INFO L87 Difference]: Start difference. First operand 942 states and 1413 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 14:02:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:57,951 INFO L93 Difference]: Finished difference Result 2570 states and 3839 transitions. [2024-11-13 14:02:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:57,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-11-13 14:02:57,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:57,961 INFO L225 Difference]: With dead ends: 2570 [2024-11-13 14:02:57,961 INFO L226 Difference]: Without dead ends: 1660 [2024-11-13 14:02:57,965 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 14:02:57,967 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 61 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 246 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 14:02:57,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2024-11-13 14:02:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1658. [2024-11-13 14:02:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1657 states have (on average 1.468316234158117) internal successors, (2433), 1657 states have internal predecessors, (2433), 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 14:02:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2433 transitions. [2024-11-13 14:02:58,047 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2433 transitions. Word has length 55 [2024-11-13 14:02:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:58,047 INFO L471 AbstractCegarLoop]: Abstraction has 1658 states and 2433 transitions. [2024-11-13 14:02:58,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 14:02:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2433 transitions. [2024-11-13 14:02:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:02:58,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:58,049 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:58,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:02:58,049 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:58,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1510637818, now seen corresponding path program 1 times [2024-11-13 14:02:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:58,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791359586] [2024-11-13 14:02:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:58,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791359586] [2024-11-13 14:02:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791359586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229087912] [2024-11-13 14:02:58,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:58,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:58,247 INFO L87 Difference]: Start difference. First operand 1658 states and 2433 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 14:02:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:58,306 INFO L93 Difference]: Finished difference Result 3286 states and 4835 transitions. [2024-11-13 14:02:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:58,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 14:02:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:58,313 INFO L225 Difference]: With dead ends: 3286 [2024-11-13 14:02:58,313 INFO L226 Difference]: Without dead ends: 1660 [2024-11-13 14:02:58,316 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 14:02:58,317 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 54 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:58,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 237 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2024-11-13 14:02:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1658. [2024-11-13 14:02:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1657 states have (on average 1.4538322269161135) internal successors, (2409), 1657 states have internal predecessors, (2409), 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 14:02:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2409 transitions. [2024-11-13 14:02:58,389 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2409 transitions. Word has length 77 [2024-11-13 14:02:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:58,389 INFO L471 AbstractCegarLoop]: Abstraction has 1658 states and 2409 transitions. [2024-11-13 14:02:58,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 14:02:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2409 transitions. [2024-11-13 14:02:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:02:58,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:58,391 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:02:58,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:02:58,391 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:58,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 25614329, now seen corresponding path program 1 times [2024-11-13 14:02:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:58,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511067890] [2024-11-13 14:02:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:02:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511067890] [2024-11-13 14:02:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511067890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:58,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:58,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:02:58,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391364440] [2024-11-13 14:02:58,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:58,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:02:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:02:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:02:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:02:58,576 INFO L87 Difference]: Start difference. First operand 1658 states and 2409 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 14:02:58,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:58,622 INFO L93 Difference]: Finished difference Result 2474 states and 3599 transitions. [2024-11-13 14:02:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:02:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 14:02:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:58,627 INFO L225 Difference]: With dead ends: 2474 [2024-11-13 14:02:58,627 INFO L226 Difference]: Without dead ends: 848 [2024-11-13 14:02:58,629 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 14:02:58,630 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 48 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:58,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:02:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-13 14:02:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 846. [2024-11-13 14:02:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 1.4307692307692308) internal successors, (1209), 845 states have internal predecessors, (1209), 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 14:02:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1209 transitions. [2024-11-13 14:02:58,675 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1209 transitions. Word has length 77 [2024-11-13 14:02:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:58,675 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1209 transitions. [2024-11-13 14:02:58,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 14:02:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1209 transitions. [2024-11-13 14:02:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:02:58,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:58,681 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:02:58,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:02:58,681 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:02:58,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 411862648, now seen corresponding path program 1 times [2024-11-13 14:02:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:02:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13891990] [2024-11-13 14:02:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:02:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:01,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13891990] [2024-11-13 14:03:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13891990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:03:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277284158] [2024-11-13 14:03:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:01,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:01,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:01,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:01,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:03:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:01,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:03:01,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:02,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:03,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277284158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:03:03,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:03:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 9] total 25 [2024-11-13 14:03:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574044812] [2024-11-13 14:03:03,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:03:03,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:03:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:03,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:03:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:03:03,819 INFO L87 Difference]: Start difference. First operand 846 states and 1209 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 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 14:03:20,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:20,124 INFO L93 Difference]: Finished difference Result 11824 states and 16723 transitions. [2024-11-13 14:03:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-13 14:03:20,125 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 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 14:03:20,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:20,169 INFO L225 Difference]: With dead ends: 11824 [2024-11-13 14:03:20,169 INFO L226 Difference]: Without dead ends: 11262 [2024-11-13 14:03:20,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18766 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=5725, Invalid=40285, Unknown=0, NotChecked=0, Total=46010 [2024-11-13 14:03:20,183 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 4536 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:20,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4536 Valid, 1801 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 14:03:20,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2024-11-13 14:03:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 8868. [2024-11-13 14:03:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8868 states, 8867 states have (on average 1.4084808841772867) internal successors, (12489), 8867 states have internal predecessors, (12489), 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 14:03:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8868 states to 8868 states and 12489 transitions. [2024-11-13 14:03:20,570 INFO L78 Accepts]: Start accepts. Automaton has 8868 states and 12489 transitions. Word has length 77 [2024-11-13 14:03:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:20,570 INFO L471 AbstractCegarLoop]: Abstraction has 8868 states and 12489 transitions. [2024-11-13 14:03:20,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 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 14:03:20,570 INFO L276 IsEmpty]: Start isEmpty. Operand 8868 states and 12489 transitions. [2024-11-13 14:03:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:03:20,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:20,575 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:20,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 14:03:20,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 14:03:20,779 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:03:20,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1878082082, now seen corresponding path program 1 times [2024-11-13 14:03:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:03:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147600680] [2024-11-13 14:03:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:03:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:03:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147600680] [2024-11-13 14:03:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147600680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:03:20,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:03:20,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:03:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608028811] [2024-11-13 14:03:20,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:03:20,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:03:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:03:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:03:20,984 INFO L87 Difference]: Start difference. First operand 8868 states and 12489 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 14:03:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:21,581 INFO L93 Difference]: Finished difference Result 26800 states and 37987 transitions. [2024-11-13 14:03:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:03:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 78 [2024-11-13 14:03:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:21,650 INFO L225 Difference]: With dead ends: 26800 [2024-11-13 14:03:21,650 INFO L226 Difference]: Without dead ends: 22162 [2024-11-13 14:03:21,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:03:21,661 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 454 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:21,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 657 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:03:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22162 states. [2024-11-13 14:03:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22162 to 13258. [2024-11-13 14:03:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13258 states, 13257 states have (on average 1.4036358150411103) internal successors, (18608), 13257 states have internal predecessors, (18608), 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 14:03:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13258 states to 13258 states and 18608 transitions. [2024-11-13 14:03:22,315 INFO L78 Accepts]: Start accepts. Automaton has 13258 states and 18608 transitions. Word has length 78 [2024-11-13 14:03:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:22,315 INFO L471 AbstractCegarLoop]: Abstraction has 13258 states and 18608 transitions. [2024-11-13 14:03:22,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 14:03:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13258 states and 18608 transitions. [2024-11-13 14:03:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:03:22,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:22,320 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:22,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:03:22,321 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:03:22,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1852779748, now seen corresponding path program 1 times [2024-11-13 14:03:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:03:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103239349] [2024-11-13 14:03:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:03:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:03:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103239349] [2024-11-13 14:03:22,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103239349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:03:22,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:03:22,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:03:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165138986] [2024-11-13 14:03:22,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:03:22,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:03:22,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:03:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:03:22,512 INFO L87 Difference]: Start difference. First operand 13258 states and 18608 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 14:03:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:23,164 INFO L93 Difference]: Finished difference Result 31190 states and 44106 transitions. [2024-11-13 14:03:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:03:23,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 78 [2024-11-13 14:03:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:23,227 INFO L225 Difference]: With dead ends: 31190 [2024-11-13 14:03:23,227 INFO L226 Difference]: Without dead ends: 26552 [2024-11-13 14:03:23,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:03:23,237 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 510 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:23,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 605 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:03:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26552 states. [2024-11-13 14:03:23,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26552 to 17648. [2024-11-13 14:03:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17648 states, 17647 states have (on average 1.4012013373377912) internal successors, (24727), 17647 states have internal predecessors, (24727), 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 14:03:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17648 states to 17648 states and 24727 transitions. [2024-11-13 14:03:23,872 INFO L78 Accepts]: Start accepts. Automaton has 17648 states and 24727 transitions. Word has length 78 [2024-11-13 14:03:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:23,873 INFO L471 AbstractCegarLoop]: Abstraction has 17648 states and 24727 transitions. [2024-11-13 14:03:23,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 14:03:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 17648 states and 24727 transitions. [2024-11-13 14:03:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:03:23,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:23,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:23,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:03:23,876 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:03:23,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash -326842202, now seen corresponding path program 1 times [2024-11-13 14:03:23,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:03:23,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512063891] [2024-11-13 14:03:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:03:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:03:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512063891] [2024-11-13 14:03:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512063891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:03:24,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:03:24,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:03:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331291082] [2024-11-13 14:03:24,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:03:24,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:03:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:03:24,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:03:24,100 INFO L87 Difference]: Start difference. First operand 17648 states and 24727 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 14:03:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:25,172 INFO L93 Difference]: Finished difference Result 35580 states and 50225 transitions. [2024-11-13 14:03:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:03:25,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 78 [2024-11-13 14:03:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:25,251 INFO L225 Difference]: With dead ends: 35580 [2024-11-13 14:03:25,251 INFO L226 Difference]: Without dead ends: 30942 [2024-11-13 14:03:25,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:03:25,265 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 474 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:25,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 691 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:03:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30942 states. [2024-11-13 14:03:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30942 to 22038. [2024-11-13 14:03:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22038 states, 22037 states have (on average 1.3997368062803466) internal successors, (30846), 22037 states have internal predecessors, (30846), 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 14:03:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22038 states to 22038 states and 30846 transitions. [2024-11-13 14:03:25,948 INFO L78 Accepts]: Start accepts. Automaton has 22038 states and 30846 transitions. Word has length 78 [2024-11-13 14:03:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:25,948 INFO L471 AbstractCegarLoop]: Abstraction has 22038 states and 30846 transitions. [2024-11-13 14:03:25,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 14:03:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22038 states and 30846 transitions. [2024-11-13 14:03:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:03:25,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:25,951 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:03:25,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:03:25,951 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:03:25,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:25,952 INFO L85 PathProgramCache]: Analyzing trace with hash 284598337, now seen corresponding path program 1 times [2024-11-13 14:03:25,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:03:25,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836991584] [2024-11-13 14:03:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:03:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:26,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836991584] [2024-11-13 14:03:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836991584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:03:26,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:03:26,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:03:26,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801608399] [2024-11-13 14:03:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:03:26,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:03:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:03:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:03:26,112 INFO L87 Difference]: Start difference. First operand 22038 states and 30846 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 14:03:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:27,014 INFO L93 Difference]: Finished difference Result 39048 states and 54998 transitions. [2024-11-13 14:03:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:03:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 78 [2024-11-13 14:03:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:27,100 INFO L225 Difference]: With dead ends: 39048 [2024-11-13 14:03:27,101 INFO L226 Difference]: Without dead ends: 34986 [2024-11-13 14:03:27,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:03:27,115 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 454 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 738 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 14:03:27,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 738 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:03:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34986 states. [2024-11-13 14:03:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34986 to 26082. [2024-11-13 14:03:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26082 states, 26081 states have (on average 1.3981059008473602) internal successors, (36464), 26081 states have internal predecessors, (36464), 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 14:03:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26082 states to 26082 states and 36464 transitions. [2024-11-13 14:03:27,990 INFO L78 Accepts]: Start accepts. Automaton has 26082 states and 36464 transitions. Word has length 78 [2024-11-13 14:03:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:27,990 INFO L471 AbstractCegarLoop]: Abstraction has 26082 states and 36464 transitions. [2024-11-13 14:03:27,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 14:03:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 26082 states and 36464 transitions. [2024-11-13 14:03:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:03:27,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:27,993 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:03:28,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:03:28,085 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:03:28,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash -210555357, now seen corresponding path program 1 times [2024-11-13 14:03:28,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:03:28,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349807459] [2024-11-13 14:03:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:28,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:03:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:28,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349807459] [2024-11-13 14:03:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349807459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:03:28,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:03:28,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:03:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534447615] [2024-11-13 14:03:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:03:28,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:03:28,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:03:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:03:28,215 INFO L87 Difference]: Start difference. First operand 26082 states and 36464 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 14:03:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:28,800 INFO L93 Difference]: Finished difference Result 39004 states and 54235 transitions. [2024-11-13 14:03:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:03:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 14:03:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:28,830 INFO L225 Difference]: With dead ends: 39004 [2024-11-13 14:03:28,830 INFO L226 Difference]: Without dead ends: 12954 [2024-11-13 14:03:28,851 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 14:03:28,852 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 34 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:28,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 211 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:03:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12954 states. [2024-11-13 14:03:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12954 to 9328. [2024-11-13 14:03:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9328 states, 9327 states have (on average 1.3950895250348452) internal successors, (13012), 9327 states have internal predecessors, (13012), 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 14:03:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9328 states to 9328 states and 13012 transitions. [2024-11-13 14:03:29,307 INFO L78 Accepts]: Start accepts. Automaton has 9328 states and 13012 transitions. Word has length 81 [2024-11-13 14:03:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:29,308 INFO L471 AbstractCegarLoop]: Abstraction has 9328 states and 13012 transitions. [2024-11-13 14:03:29,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 14:03:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9328 states and 13012 transitions. [2024-11-13 14:03:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:03:29,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:29,310 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:03:29,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:03:29,310 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:03:29,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash 614022370, now seen corresponding path program 1 times [2024-11-13 14:03:29,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:03:29,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502820693] [2024-11-13 14:03:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:03:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:03:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502820693] [2024-11-13 14:03:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502820693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:03:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053386608] [2024-11-13 14:03:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:29,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:29,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:29,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:03:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:30,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:03:30,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:31,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053386608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:03:32,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:03:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-13 14:03:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724439289] [2024-11-13 14:03:32,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:03:32,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 14:03:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:03:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 14:03:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:03:32,502 INFO L87 Difference]: Start difference. First operand 9328 states and 13012 transitions. Second operand has 32 states, 32 states have (on average 6.75) internal successors, (216), 32 states have internal predecessors, (216), 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 14:03:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:59,346 INFO L93 Difference]: Finished difference Result 237424 states and 332435 transitions. [2024-11-13 14:03:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2024-11-13 14:03:59,347 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.75) internal successors, (216), 32 states have internal predecessors, (216), 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 14:03:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:59,707 INFO L225 Difference]: With dead ends: 237424 [2024-11-13 14:03:59,707 INFO L226 Difference]: Without dead ends: 228130 [2024-11-13 14:03:59,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39111 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=11393, Invalid=78307, Unknown=0, NotChecked=0, Total=89700 [2024-11-13 14:03:59,764 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 12255 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 4148 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12255 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:59,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12255 Valid, 4199 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4148 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 14:03:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228130 states. [2024-11-13 14:04:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228130 to 81023. [2024-11-13 14:04:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81023 states, 81022 states have (on average 1.3765643899187874) internal successors, (111532), 81022 states have internal predecessors, (111532), 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 14:04:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81023 states to 81023 states and 111532 transitions. [2024-11-13 14:04:03,064 INFO L78 Accepts]: Start accepts. Automaton has 81023 states and 111532 transitions. Word has length 81 [2024-11-13 14:04:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:04:03,066 INFO L471 AbstractCegarLoop]: Abstraction has 81023 states and 111532 transitions. [2024-11-13 14:04:03,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.75) internal successors, (216), 32 states have internal predecessors, (216), 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 14:04:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 81023 states and 111532 transitions. [2024-11-13 14:04:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:04:03,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:04:03,070 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:04:03,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:04:03,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:04:03,270 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:04:03,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 153745219, now seen corresponding path program 1 times [2024-11-13 14:04:03,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:03,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254178100] [2024-11-13 14:04:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254178100] [2024-11-13 14:04:03,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254178100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:04:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:04:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611284443] [2024-11-13 14:04:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:03,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:04:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:04:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:04:03,383 INFO L87 Difference]: Start difference. First operand 81023 states and 111532 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 14:04:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:04:05,220 INFO L93 Difference]: Finished difference Result 123561 states and 170096 transitions. [2024-11-13 14:04:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:04:05,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 14:04:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:04:05,285 INFO L225 Difference]: With dead ends: 123561 [2024-11-13 14:04:05,285 INFO L226 Difference]: Without dead ends: 43672 [2024-11-13 14:04:05,324 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 14:04:05,325 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 25 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:04:05,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:04:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43672 states. [2024-11-13 14:04:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43672 to 43526. [2024-11-13 14:04:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43526 states, 43525 states have (on average 1.352188397472717) internal successors, (58854), 43525 states have internal predecessors, (58854), 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 14:04:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43526 states to 43526 states and 58854 transitions. [2024-11-13 14:04:06,527 INFO L78 Accepts]: Start accepts. Automaton has 43526 states and 58854 transitions. Word has length 81 [2024-11-13 14:04:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:04:06,527 INFO L471 AbstractCegarLoop]: Abstraction has 43526 states and 58854 transitions. [2024-11-13 14:04:06,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 14:04:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 43526 states and 58854 transitions. [2024-11-13 14:04:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 14:04:06,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:04:06,530 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:04:06,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:04:06,531 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:04:06,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash -363963859, now seen corresponding path program 1 times [2024-11-13 14:04:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434513284] [2024-11-13 14:04:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:06,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434513284] [2024-11-13 14:04:06,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434513284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:06,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:04:06,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:04:06,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831136905] [2024-11-13 14:04:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:06,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:04:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:04:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:04:06,716 INFO L87 Difference]: Start difference. First operand 43526 states and 58854 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:04:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:04:08,714 INFO L93 Difference]: Finished difference Result 104691 states and 141085 transitions. [2024-11-13 14:04:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:04:08,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2024-11-13 14:04:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:04:08,779 INFO L225 Difference]: With dead ends: 104691 [2024-11-13 14:04:08,780 INFO L226 Difference]: Without dead ends: 61505 [2024-11-13 14:04:08,811 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 14:04:08,812 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 50 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:04:08,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 231 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:04:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61505 states. [2024-11-13 14:04:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61505 to 61455. [2024-11-13 14:04:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61455 states, 61454 states have (on average 1.3273830832818043) internal successors, (81573), 61454 states have internal predecessors, (81573), 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 14:04:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61455 states to 61455 states and 81573 transitions. [2024-11-13 14:04:10,712 INFO L78 Accepts]: Start accepts. Automaton has 61455 states and 81573 transitions. Word has length 82 [2024-11-13 14:04:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:04:10,713 INFO L471 AbstractCegarLoop]: Abstraction has 61455 states and 81573 transitions. [2024-11-13 14:04:10,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:04:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 61455 states and 81573 transitions. [2024-11-13 14:04:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 14:04:10,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:04:10,718 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:04:10,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:04:10,718 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:04:10,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1326540405, now seen corresponding path program 1 times [2024-11-13 14:04:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498683660] [2024-11-13 14:04:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:10,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:10,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498683660] [2024-11-13 14:04:10,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498683660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:10,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:04:10,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:04:10,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687317511] [2024-11-13 14:04:10,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:10,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:04:10,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:04:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:04:10,802 INFO L87 Difference]: Start difference. First operand 61455 states and 81573 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:04:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:04:12,766 INFO L93 Difference]: Finished difference Result 112456 states and 148899 transitions. [2024-11-13 14:04:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:04:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2024-11-13 14:04:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:04:12,819 INFO L225 Difference]: With dead ends: 112456 [2024-11-13 14:04:12,819 INFO L226 Difference]: Without dead ends: 53064 [2024-11-13 14:04:12,838 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 14:04:12,838 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 49 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:04:12,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 267 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:04:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53064 states. [2024-11-13 14:04:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53064 to 40803. [2024-11-13 14:04:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40803 states, 40802 states have (on average 1.3048870153423853) internal successors, (53242), 40802 states have internal predecessors, (53242), 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 14:04:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40803 states to 40803 states and 53242 transitions. [2024-11-13 14:04:14,285 INFO L78 Accepts]: Start accepts. Automaton has 40803 states and 53242 transitions. Word has length 82 [2024-11-13 14:04:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:04:14,286 INFO L471 AbstractCegarLoop]: Abstraction has 40803 states and 53242 transitions. [2024-11-13 14:04:14,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:04:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 40803 states and 53242 transitions. [2024-11-13 14:04:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 14:04:14,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:04:14,291 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:04:14,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 14:04:14,291 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:04:14,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash 46915379, now seen corresponding path program 1 times [2024-11-13 14:04:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:14,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291749899] [2024-11-13 14:04:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:14,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291749899] [2024-11-13 14:04:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291749899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284370034] [2024-11-13 14:04:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:15,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:15,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:15,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:15,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:04:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:15,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 14:04:15,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:19,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:04:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284370034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:04:25,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:04:25,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 20] total 44 [2024-11-13 14:04:25,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869615032] [2024-11-13 14:04:25,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:04:25,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 14:04:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 14:04:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 14:04:25,317 INFO L87 Difference]: Start difference. First operand 40803 states and 53242 transitions. Second operand has 44 states, 44 states have (on average 4.840909090909091) internal successors, (213), 44 states have internal predecessors, (213), 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 14:04:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:04:44,913 INFO L93 Difference]: Finished difference Result 206215 states and 268079 transitions. [2024-11-13 14:04:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-13 14:04:44,914 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.840909090909091) internal successors, (213), 44 states have internal predecessors, (213), 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 82 [2024-11-13 14:04:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:04:45,065 INFO L225 Difference]: With dead ends: 206215 [2024-11-13 14:04:45,065 INFO L226 Difference]: Without dead ends: 165540 [2024-11-13 14:04:45,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8373 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=5074, Invalid=18182, Unknown=0, NotChecked=0, Total=23256 [2024-11-13 14:04:45,104 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 4167 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:04:45,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 2778 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 3157 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 14:04:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165540 states. [2024-11-13 14:04:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165540 to 120767. [2024-11-13 14:04:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120767 states, 120766 states have (on average 1.296739148435818) internal successors, (156602), 120766 states have internal predecessors, (156602), 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 14:04:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120767 states to 120767 states and 156602 transitions. [2024-11-13 14:04:49,690 INFO L78 Accepts]: Start accepts. Automaton has 120767 states and 156602 transitions. Word has length 82 [2024-11-13 14:04:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:04:49,691 INFO L471 AbstractCegarLoop]: Abstraction has 120767 states and 156602 transitions. [2024-11-13 14:04:49,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.840909090909091) internal successors, (213), 44 states have internal predecessors, (213), 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 14:04:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 120767 states and 156602 transitions. [2024-11-13 14:04:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 14:04:49,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:04:49,697 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:04:49,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:04:49,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:49,901 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:04:49,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1864412532, now seen corresponding path program 1 times [2024-11-13 14:04:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:49,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439238149] [2024-11-13 14:04:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:49,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439238149] [2024-11-13 14:04:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439238149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401782834] [2024-11-13 14:04:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:50,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:50,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:50,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:50,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da078a7c-0f2e-45aa-a61d-6bc2d8b05872/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:04:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:50,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:04:50,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:51,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:04:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401782834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:04:53,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:04:53,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-13 14:04:53,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728365493] [2024-11-13 14:04:53,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:04:53,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:04:53,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:04:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:04:53,583 INFO L87 Difference]: Start difference. First operand 120767 states and 156602 transitions. Second operand has 28 states, 28 states have (on average 7.75) internal successors, (217), 28 states have internal predecessors, (217), 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)