./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/max-2-u.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_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/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_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/max-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/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_647b1cec-6ba0-418b-916e-b3a75ad0a564/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 d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:53:12,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:53:12,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:53:12,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:53:12,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:53:12,194 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:53:12,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:53:12,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:53:12,195 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:53:12,195 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:53:12,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:53:12,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:53:12,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:53:12,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:53:12,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:53:12,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:53:12,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:12,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:53:12,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:53:12,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:53:12,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:53:12,199 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_647b1cec-6ba0-418b-916e-b3a75ad0a564/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 -> d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f [2024-11-13 14:53:12,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:53:12,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:53:12,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:53:12,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:53:12,560 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:53:12,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-multidimensional/max-2-u.c Unable to find full path for "g++" [2024-11-13 14:53:14,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:53:14,721 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:53:14,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/sv-benchmarks/c/array-multidimensional/max-2-u.c [2024-11-13 14:53:14,730 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/data/4db6aba62/feeaa12d045540a3839c72aaac3693ca/FLAG55d5c4e83 [2024-11-13 14:53:14,750 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/data/4db6aba62/feeaa12d045540a3839c72aaac3693ca [2024-11-13 14:53:14,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:53:14,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:53:14,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:14,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:53:14,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:53:14,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:14" (1/1) ... [2024-11-13 14:53:14,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f37d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:14, skipping insertion in model container [2024-11-13 14:53:14,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:14" (1/1) ... [2024-11-13 14:53:14,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:53:14,953 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_647b1cec-6ba0-418b-916e-b3a75ad0a564/sv-benchmarks/c/array-multidimensional/max-2-u.c[319,332] [2024-11-13 14:53:14,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:14,997 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:53:15,009 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_647b1cec-6ba0-418b-916e-b3a75ad0a564/sv-benchmarks/c/array-multidimensional/max-2-u.c[319,332] [2024-11-13 14:53:15,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:15,043 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:53:15,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15 WrapperNode [2024-11-13 14:53:15,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:15,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:15,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:53:15,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:53:15,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,088 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2024-11-13 14:53:15,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:15,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:53:15,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:53:15,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:53:15,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,127 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 14:53:15,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:53:15,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:53:15,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:53:15,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:53:15,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (1/1) ... [2024-11-13 14:53:15,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:15,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:15,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:53:15,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:53:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:53:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:53:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:53:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:53:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:53:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:53:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:53:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:53:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:53:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:53:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:53:15,345 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:53:15,347 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:53:15,519 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-13 14:53:15,519 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:53:15,532 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:53:15,532 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-13 14:53:15,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:15 BoogieIcfgContainer [2024-11-13 14:53:15,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:53:15,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:53:15,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:53:15,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:53:15,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:53:14" (1/3) ... [2024-11-13 14:53:15,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fde65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:15, skipping insertion in model container [2024-11-13 14:53:15,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:15" (2/3) ... [2024-11-13 14:53:15,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fde65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:15, skipping insertion in model container [2024-11-13 14:53:15,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:15" (3/3) ... [2024-11-13 14:53:15,546 INFO L112 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2024-11-13 14:53:15,565 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:53:15,567 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG max-2-u.c that has 1 procedures, 23 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-13 14:53:15,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:53:15,665 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;@1b07c730, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:53:15,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:53:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 14:53:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 14:53:15,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:15,675 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:15,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:15,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1783237736, now seen corresponding path program 1 times [2024-11-13 14:53:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:15,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718866634] [2024-11-13 14:53:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:15,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:16,025 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 14:53:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718866634] [2024-11-13 14:53:16,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718866634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:16,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376818534] [2024-11-13 14:53:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:16,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:16,078 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 14:53:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:16,177 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2024-11-13 14:53:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-13 14:53:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:16,188 INFO L225 Difference]: With dead ends: 47 [2024-11-13 14:53:16,189 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 14:53:16,193 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 14:53:16,198 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:16,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:53:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 14:53:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-13 14:53:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 14:53:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-13 14:53:16,240 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2024-11-13 14:53:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:16,241 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-13 14:53:16,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 14:53:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-13 14:53:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:53:16,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:16,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:16,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:53:16,244 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:16,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1661923646, now seen corresponding path program 1 times [2024-11-13 14:53:16,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:16,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640174375] [2024-11-13 14:53:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640174375] [2024-11-13 14:53:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640174375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:53:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373542930] [2024-11-13 14:53:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:16,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:16,423 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14:53:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:16,525 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-11-13 14:53:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:16,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-13 14:53:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:16,527 INFO L225 Difference]: With dead ends: 46 [2024-11-13 14:53:16,527 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 14:53:16,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:16,528 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:16,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:53:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 14:53:16,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-11-13 14:53:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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 14:53:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-13 14:53:16,539 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2024-11-13 14:53:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:16,539 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-13 14:53:16,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14:53:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-13 14:53:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:53:16,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:16,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:16,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:53:16,540 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:16,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash -693666458, now seen corresponding path program 1 times [2024-11-13 14:53:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:16,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531946073] [2024-11-13 14:53:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:16,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531946073] [2024-11-13 14:53:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531946073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:53:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977181721] [2024-11-13 14:53:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:16,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:16,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:16,714 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14:53:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:16,810 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-13 14:53:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-13 14:53:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:16,812 INFO L225 Difference]: With dead ends: 49 [2024-11-13 14:53:16,812 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 14:53:16,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:16,813 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:16,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:53:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 14:53:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2024-11-13 14:53:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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 14:53:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-13 14:53:16,823 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2024-11-13 14:53:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:16,823 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 14:53:16,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14:53:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-11-13 14:53:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:53:16,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:16,825 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] [2024-11-13 14:53:16,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:53:16,826 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:16,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1235077727, now seen corresponding path program 1 times [2024-11-13 14:53:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584775561] [2024-11-13 14:53:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:16,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584775561] [2024-11-13 14:53:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584775561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849620928] [2024-11-13 14:53:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:17,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:17,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:17,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:17,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:53:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:17,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:17,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:17,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:17,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849620928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:17,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 14:53:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936498354] [2024-11-13 14:53:17,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:17,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:53:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:53:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:53:17,295 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 14:53:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:17,470 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2024-11-13 14:53:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:53:17,470 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 20 [2024-11-13 14:53:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:17,471 INFO L225 Difference]: With dead ends: 72 [2024-11-13 14:53:17,471 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 14:53:17,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:53:17,472 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:17,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 49 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:53:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 14:53:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-11-13 14:53:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 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 14:53:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-13 14:53:17,492 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2024-11-13 14:53:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:17,493 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-13 14:53:17,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 14:53:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-13 14:53:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:53:17,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:17,495 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:17,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:53:17,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:17,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:17,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1176173101, now seen corresponding path program 2 times [2024-11-13 14:53:17,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:17,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276662847] [2024-11-13 14:53:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:17,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 14:53:17,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276662847] [2024-11-13 14:53:17,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276662847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516061345] [2024-11-13 14:53:17,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:53:17,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:18,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:18,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:18,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:53:18,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:53:18,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:18,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:53:18,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 14:53:18,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 14:53:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516061345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:18,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-13 14:53:18,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845796253] [2024-11-13 14:53:18,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:18,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:53:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:53:18,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:53:18,386 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 14:53:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:18,717 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2024-11-13 14:53:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:53:18,718 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 32 [2024-11-13 14:53:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:18,718 INFO L225 Difference]: With dead ends: 147 [2024-11-13 14:53:18,719 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 14:53:18,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:53:18,720 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 206 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:18,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 101 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:53:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 14:53:18,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2024-11-13 14:53:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 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 14:53:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2024-11-13 14:53:18,736 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 32 [2024-11-13 14:53:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:18,736 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2024-11-13 14:53:18,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 14:53:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2024-11-13 14:53:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:53:18,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:18,737 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:18,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:53:18,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:18,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:18,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1207721299, now seen corresponding path program 3 times [2024-11-13 14:53:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:18,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802837480] [2024-11-13 14:53:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-13 14:53:19,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:19,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802837480] [2024-11-13 14:53:19,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802837480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:19,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487498632] [2024-11-13 14:53:19,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:53:19,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:19,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:19,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:19,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:53:19,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:53:19,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:19,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:19,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-13 14:53:19,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-13 14:53:20,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487498632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:20,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2024-11-13 14:53:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175587483] [2024-11-13 14:53:20,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:20,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:53:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:53:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:53:20,040 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 14:53:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:22,125 INFO L93 Difference]: Finished difference Result 560 states and 666 transitions. [2024-11-13 14:53:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 14:53:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 56 [2024-11-13 14:53:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:22,130 INFO L225 Difference]: With dead ends: 560 [2024-11-13 14:53:22,130 INFO L226 Difference]: Without dead ends: 476 [2024-11-13 14:53:22,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 14:53:22,134 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1606 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:22,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 80 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:53:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-13 14:53:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 202. [2024-11-13 14:53:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3134328358208955) internal successors, (264), 201 states have internal predecessors, (264), 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 14:53:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2024-11-13 14:53:22,174 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 56 [2024-11-13 14:53:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:22,174 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2024-11-13 14:53:22,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 14:53:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2024-11-13 14:53:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-13 14:53:22,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:22,179 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:22,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:22,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:53:22,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:22,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2017738806, now seen corresponding path program 4 times [2024-11-13 14:53:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:22,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615793699] [2024-11-13 14:53:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-11-13 14:53:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:23,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615793699] [2024-11-13 14:53:23,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615793699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:23,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393796579] [2024-11-13 14:53:23,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:53:23,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:23,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:23,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:23,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:53:23,478 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:53:23,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:23,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:53:23,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-13 14:53:24,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-13 14:53:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393796579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:25,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:25,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 49 [2024-11-13 14:53:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244217368] [2024-11-13 14:53:25,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:25,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 14:53:25,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 14:53:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 14:53:25,236 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 49 states, 49 states have (on average 3.020408163265306) internal successors, (148), 49 states have internal predecessors, (148), 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 14:53:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:34,236 INFO L93 Difference]: Finished difference Result 1573 states and 1865 transitions. [2024-11-13 14:53:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-13 14:53:34,237 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.020408163265306) internal successors, (148), 49 states have internal predecessors, (148), 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 168 [2024-11-13 14:53:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:34,243 INFO L225 Difference]: With dead ends: 1573 [2024-11-13 14:53:34,244 INFO L226 Difference]: Without dead ends: 1374 [2024-11-13 14:53:34,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16287 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=9701, Invalid=33771, Unknown=0, NotChecked=0, Total=43472 [2024-11-13 14:53:34,267 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 6702 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6702 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:34,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6702 Valid, 562 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:53:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2024-11-13 14:53:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 491. [2024-11-13 14:53:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.3244897959183672) internal successors, (649), 490 states have internal predecessors, (649), 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 14:53:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2024-11-13 14:53:34,376 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 168 [2024-11-13 14:53:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:34,377 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2024-11-13 14:53:34,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.020408163265306) internal successors, (148), 49 states have internal predecessors, (148), 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 14:53:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2024-11-13 14:53:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-13 14:53:34,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:34,386 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 132, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:34,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:34,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:53:34,591 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:34,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1229273459, now seen corresponding path program 5 times [2024-11-13 14:53:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:34,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621488384] [2024-11-13 14:53:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 27566 trivial. 0 not checked. [2024-11-13 14:53:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621488384] [2024-11-13 14:53:36,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621488384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586905670] [2024-11-13 14:53:36,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:53:36,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:36,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:36,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:36,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:53:56,698 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 117 check-sat command(s) [2024-11-13 14:53:56,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:56,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:53:56,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11927 proven. 210 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-11-13 14:53:57,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11013 proven. 1124 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-11-13 14:53:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586905670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:57,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:57,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2024-11-13 14:53:57,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146749340] [2024-11-13 14:53:57,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:57,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 14:53:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 14:53:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 14:53:57,893 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 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 14:53:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:58,758 INFO L93 Difference]: Finished difference Result 1547 states and 2188 transitions. [2024-11-13 14:53:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 14:53:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 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 454 [2024-11-13 14:53:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:58,763 INFO L225 Difference]: With dead ends: 1547 [2024-11-13 14:53:58,763 INFO L226 Difference]: Without dead ends: 1059 [2024-11-13 14:53:58,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:53:58,766 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 532 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:58,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 170 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:53:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-13 14:53:58,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1009. [2024-11-13 14:53:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 1.3244047619047619) internal successors, (1335), 1008 states have internal predecessors, (1335), 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 14:53:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1335 transitions. [2024-11-13 14:53:58,878 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1335 transitions. Word has length 454 [2024-11-13 14:53:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:58,879 INFO L471 AbstractCegarLoop]: Abstraction has 1009 states and 1335 transitions. [2024-11-13 14:53:58,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 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 14:53:58,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1335 transitions. [2024-11-13 14:53:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2024-11-13 14:53:58,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:58,929 INFO L215 NwaCegarLoop]: trace histogram [286, 286, 286, 26, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:59,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:53:59,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:53:59,130 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:59,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash 743594163, now seen corresponding path program 6 times [2024-11-13 14:53:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:59,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135225051] [2024-11-13 14:53:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:59,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 1 proven. 351 refuted. 0 times theorem prover too weak. 125587 trivial. 0 not checked. [2024-11-13 14:54:05,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:54:05,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135225051] [2024-11-13 14:54:05,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135225051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:54:05,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88890378] [2024-11-13 14:54:05,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:54:05,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:05,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:05,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:05,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:54:05,459 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 14:54:05,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:54:05,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:54:05,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-11-13 14:54:05,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:54:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-11-13 14:54:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88890378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:54:05,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:54:05,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 4, 4] total 34 [2024-11-13 14:54:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112127316] [2024-11-13 14:54:05,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:54:05,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:54:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:54:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:54:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=699, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:54:05,873 INFO L87 Difference]: Start difference. First operand 1009 states and 1335 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 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 14:54:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:12,230 INFO L93 Difference]: Finished difference Result 2220 states and 2891 transitions. [2024-11-13 14:54:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-11-13 14:54:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 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 930 [2024-11-13 14:54:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:12,236 INFO L225 Difference]: With dead ends: 2220 [2024-11-13 14:54:12,236 INFO L226 Difference]: Without dead ends: 1214 [2024-11-13 14:54:12,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2026 GetRequests, 1856 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8787, Invalid=20625, Unknown=0, NotChecked=0, Total=29412 [2024-11-13 14:54:12,243 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1084 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:12,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 147 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:54:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-11-13 14:54:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1136. [2024-11-13 14:54:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.3013215859030838) internal successors, (1477), 1135 states have internal predecessors, (1477), 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 14:54:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1477 transitions. [2024-11-13 14:54:12,436 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1477 transitions. Word has length 930 [2024-11-13 14:54:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:12,436 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 1477 transitions. [2024-11-13 14:54:12,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 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 14:54:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1477 transitions. [2024-11-13 14:54:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2024-11-13 14:54:12,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:12,479 INFO L215 NwaCegarLoop]: trace histogram [297, 297, 297, 108, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:12,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:54:12,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:12,680 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:12,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1776272899, now seen corresponding path program 7 times [2024-11-13 14:54:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:54:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745586637] [2024-11-13 14:54:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:54:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-11-13 14:54:17,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:54:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745586637] [2024-11-13 14:54:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745586637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:54:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689600169] [2024-11-13 14:54:17,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:54:17,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:17,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:17,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:17,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:54:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:18,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:54:18,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-11-13 14:54:19,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:54:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-11-13 14:54:21,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689600169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:54:21,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:54:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 88 [2024-11-13 14:54:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551101064] [2024-11-13 14:54:21,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:54:21,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-13 14:54:21,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:54:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-13 14:54:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=4289, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 14:54:21,077 INFO L87 Difference]: Start difference. First operand 1136 states and 1477 transitions. Second operand has 88 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:54:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:24,081 INFO L93 Difference]: Finished difference Result 3511 states and 4949 transitions. [2024-11-13 14:54:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-13 14:54:24,082 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1054 [2024-11-13 14:54:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:24,092 INFO L225 Difference]: With dead ends: 3511 [2024-11-13 14:54:24,093 INFO L226 Difference]: Without dead ends: 2406 [2024-11-13 14:54:24,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2165 GetRequests, 2051 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4757 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5075, Invalid=8265, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 14:54:24,097 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2242 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:24,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 346 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:54:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2024-11-13 14:54:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2296. [2024-11-13 14:54:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 1.3006535947712419) internal successors, (2985), 2295 states have internal predecessors, (2985), 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 14:54:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2985 transitions. [2024-11-13 14:54:24,369 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2985 transitions. Word has length 1054 [2024-11-13 14:54:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:24,369 INFO L471 AbstractCegarLoop]: Abstraction has 2296 states and 2985 transitions. [2024-11-13 14:54:24,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:54:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2985 transitions. [2024-11-13 14:54:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2128 [2024-11-13 14:54:24,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:24,406 INFO L215 NwaCegarLoop]: trace histogram [616, 616, 616, 224, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:24,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:54:24,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:24,606 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:24,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash -931755939, now seen corresponding path program 8 times [2024-11-13 14:54:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:54:24,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67079417] [2024-11-13 14:54:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:54:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-11-13 14:54:41,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:54:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67079417] [2024-11-13 14:54:41,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67079417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:54:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061408171] [2024-11-13 14:54:41,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:54:41,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:41,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:41,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:41,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:54:42,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:54:42,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:54:42,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 7100 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 14:54:42,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-11-13 14:54:45,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:54:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-11-13 14:54:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061408171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:54:50,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:54:50,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 175 [2024-11-13 14:54:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086639341] [2024-11-13 14:54:50,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:54:50,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-13 14:54:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:54:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-13 14:54:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13459, Invalid=16991, Unknown=0, NotChecked=0, Total=30450 [2024-11-13 14:54:50,502 INFO L87 Difference]: Start difference. First operand 2296 states and 2985 transitions. Second operand has 175 states, 175 states have (on average 1.1142857142857143) internal successors, (195), 175 states have internal predecessors, (195), 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 14:55:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:07,917 INFO L93 Difference]: Finished difference Result 7078 states and 9966 transitions. [2024-11-13 14:55:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-13 14:55:07,917 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 1.1142857142857143) internal successors, (195), 175 states have internal predecessors, (195), 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 2127 [2024-11-13 14:55:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:07,932 INFO L225 Difference]: With dead ends: 7078 [2024-11-13 14:55:07,932 INFO L226 Difference]: Without dead ends: 4842 [2024-11-13 14:55:07,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4369 GetRequests, 4139 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19605 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=20242, Invalid=33350, Unknown=0, NotChecked=0, Total=53592 [2024-11-13 14:55:07,944 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4067 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:07,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 618 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:55:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2024-11-13 14:55:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4616. [2024-11-13 14:55:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.3003250270855904) internal successors, (6001), 4615 states have internal predecessors, (6001), 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 14:55:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6001 transitions. [2024-11-13 14:55:08,646 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6001 transitions. Word has length 2127 [2024-11-13 14:55:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:08,647 INFO L471 AbstractCegarLoop]: Abstraction has 4616 states and 6001 transitions. [2024-11-13 14:55:08,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 1.1142857142857143) internal successors, (195), 175 states have internal predecessors, (195), 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 14:55:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6001 transitions. [2024-11-13 14:55:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4274 [2024-11-13 14:55:08,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:08,760 INFO L215 NwaCegarLoop]: trace histogram [1254, 1254, 1254, 456, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:08,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:55:08,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:08,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:08,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash 675108125, now seen corresponding path program 9 times [2024-11-13 14:55:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:08,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205035622] [2024-11-13 14:55:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:08,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 2430215 trivial. 0 not checked. [2024-11-13 14:56:32,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205035622] [2024-11-13 14:56:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205035622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716344878] [2024-11-13 14:56:32,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:56:32,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:32,337 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:32,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:56:33,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 14:56:33,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:56:33,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:56:33,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:56:34,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:56:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 2528 proven. 0 refuted. 0 times theorem prover too weak. 2473921 trivial. 0 not checked. [2024-11-13 14:56:35,056 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:56:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716344878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:56:35,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [118] total 122 [2024-11-13 14:56:35,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190957720] [2024-11-13 14:56:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:35,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:56:35,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:35,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:56:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6800, Invalid=7962, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 14:56:35,059 INFO L87 Difference]: Start difference. First operand 4616 states and 6001 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 14:56:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:35,778 INFO L93 Difference]: Finished difference Result 9096 states and 11973 transitions. [2024-11-13 14:56:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:56:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 4273 [2024-11-13 14:56:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:35,803 INFO L225 Difference]: With dead ends: 9096 [2024-11-13 14:56:35,804 INFO L226 Difference]: Without dead ends: 4955 [2024-11-13 14:56:35,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4391 GetRequests, 4270 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=6806, Invalid=8200, Unknown=0, NotChecked=0, Total=15006 [2024-11-13 14:56:35,812 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:35,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 47 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:56:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2024-11-13 14:56:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 4616. [2024-11-13 14:56:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.3001083423618636) internal successors, (6000), 4615 states have internal predecessors, (6000), 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 14:56:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6000 transitions. [2024-11-13 14:56:36,664 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6000 transitions. Word has length 4273 [2024-11-13 14:56:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:36,671 INFO L471 AbstractCegarLoop]: Abstraction has 4616 states and 6000 transitions. [2024-11-13 14:56:36,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 14:56:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6000 transitions. [2024-11-13 14:56:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4274 [2024-11-13 14:56:37,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:37,006 INFO L215 NwaCegarLoop]: trace histogram [1254, 1254, 1253, 456, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:37,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:56:37,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647b1cec-6ba0-418b-916e-b3a75ad0a564/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 14:56:37,206 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:37,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1551509601, now seen corresponding path program 1 times [2024-11-13 14:56:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898717518] [2024-11-13 14:56:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:37,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat