./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array22_pattern.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_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/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_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array22_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/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_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/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 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:19:29,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:19:29,928 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:19:29,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:19:29,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:19:29,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:19:29,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:19:29,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:19:29,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:19:29,987 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:19:29,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:19:29,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:19:29,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:19:29,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:19:29,990 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:19:29,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:19:29,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:19:29,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:19:29,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:19:29,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:19:29,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:19:29,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:19:29,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:19:29,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:19:29,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:19:29,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:19:29,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:19:29,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:19:29,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:19:29,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:19:29,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:19:29,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:19:29,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:19:29,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:19:29,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:19:29,994 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_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/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 -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2024-11-13 16:19:30,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:19:30,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:19:30,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:19:30,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:19:30,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:19:30,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-patterns/array22_pattern.c Unable to find full path for "g++" [2024-11-13 16:19:32,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:19:32,509 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:19:32,509 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/sv-benchmarks/c/array-patterns/array22_pattern.c [2024-11-13 16:19:32,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/data/376fd8275/9c82c1e35ba8432c8a01bdefadd9a80f/FLAG8070bb68b [2024-11-13 16:19:32,533 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/data/376fd8275/9c82c1e35ba8432c8a01bdefadd9a80f [2024-11-13 16:19:32,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:19:32,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:19:32,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:19:32,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:19:32,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:19:32,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155f9ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32, skipping insertion in model container [2024-11-13 16:19:32,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:19:32,767 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_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2024-11-13 16:19:32,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:19:32,815 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:19:32,827 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_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2024-11-13 16:19:32,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:19:32,872 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:19:32,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32 WrapperNode [2024-11-13 16:19:32,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:19:32,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:19:32,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:19:32,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:19:32,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,916 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2024-11-13 16:19:32,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:19:32,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:19:32,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:19:32,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:19:32,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,933 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,957 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-13 16:19:32,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:32,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:19:32,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:19:32,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:19:32,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:19:32,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (1/1) ... [2024-11-13 16:19:33,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:19:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:33,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:19:33,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:19:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-13 16:19:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-13 16:19:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:19:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 16:19:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 16:19:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:19:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:19:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:19:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:19:33,153 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:19:33,155 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:19:33,467 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-13 16:19:33,467 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:19:33,483 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:19:33,483 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 16:19:33,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:19:33 BoogieIcfgContainer [2024-11-13 16:19:33,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:19:33,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:19:33,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:19:33,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:19:33,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:19:32" (1/3) ... [2024-11-13 16:19:33,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b56e147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:19:33, skipping insertion in model container [2024-11-13 16:19:33,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:19:32" (2/3) ... [2024-11-13 16:19:33,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b56e147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:19:33, skipping insertion in model container [2024-11-13 16:19:33,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:19:33" (3/3) ... [2024-11-13 16:19:33,498 INFO L112 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2024-11-13 16:19:33,517 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:19:33,519 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array22_pattern.c that has 3 procedures, 39 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 16:19:33,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:19:33,620 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;@1268e2f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:19:33,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:19:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:19:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:19:33,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:33,636 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:33,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:33,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1459196115, now seen corresponding path program 1 times [2024-11-13 16:19:33,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774594775] [2024-11-13 16:19:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:33,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:33,848 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 16:19:33,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:33,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774594775] [2024-11-13 16:19:33,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774594775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:33,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:33,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:19:33,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184157539] [2024-11-13 16:19:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:33,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:19:33,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:19:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:19:33,909 INFO L87 Difference]: Start difference. First operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:19:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:33,937 INFO L93 Difference]: Finished difference Result 75 states and 113 transitions. [2024-11-13 16:19:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:19:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-13 16:19:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:33,945 INFO L225 Difference]: With dead ends: 75 [2024-11-13 16:19:33,946 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 16:19:33,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:19:33,955 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:33,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 16:19:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-13 16:19:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:19:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-11-13 16:19:34,005 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 15 [2024-11-13 16:19:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:34,007 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-11-13 16:19:34,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:19:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-11-13 16:19:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:19:34,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:34,011 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:34,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:19:34,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:34,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash 316660810, now seen corresponding path program 1 times [2024-11-13 16:19:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:34,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537304944] [2024-11-13 16:19:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:34,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 16:19:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:19:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:19:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 16:19:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 16:19:34,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:34,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537304944] [2024-11-13 16:19:34,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537304944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:34,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826375436] [2024-11-13 16:19:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:34,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:34,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:34,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:19:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:19:34,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:34,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:19:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826375436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:34,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:19:34,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 16:19:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715436422] [2024-11-13 16:19:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:34,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:34,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:19:34,642 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:34,688 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2024-11-13 16:19:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:34,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-13 16:19:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:34,692 INFO L225 Difference]: With dead ends: 67 [2024-11-13 16:19:34,692 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 16:19:34,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:19:34,695 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:34,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 16:19:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 16:19:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 16:19:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-13 16:19:34,708 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 42 [2024-11-13 16:19:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:34,708 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-13 16:19:34,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-13 16:19:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:19:34,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:34,712 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:34,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:34,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 16:19:34,912 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:34,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1337729164, now seen corresponding path program 1 times [2024-11-13 16:19:34,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:34,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691957078] [2024-11-13 16:19:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:34,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 16:19:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:19:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:19:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 16:19:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 16:19:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691957078] [2024-11-13 16:19:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691957078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:19:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745145087] [2024-11-13 16:19:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:35,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:35,172 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:35,193 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-11-13 16:19:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-13 16:19:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:35,197 INFO L225 Difference]: With dead ends: 46 [2024-11-13 16:19:35,197 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 16:19:35,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:35,198 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:35,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 105 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 16:19:35,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-13 16:19:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 16:19:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-11-13 16:19:35,213 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 42 [2024-11-13 16:19:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:35,217 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-11-13 16:19:35,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-11-13 16:19:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 16:19:35,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:35,218 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:35,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:19:35,219 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:35,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash -295229542, now seen corresponding path program 1 times [2024-11-13 16:19:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367342067] [2024-11-13 16:19:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 16:19:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:19:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:19:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 16:19:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 16:19:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367342067] [2024-11-13 16:19:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367342067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:35,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:19:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653096078] [2024-11-13 16:19:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:35,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:19:35,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:19:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:35,501 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:35,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:35,694 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2024-11-13 16:19:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:19:35,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2024-11-13 16:19:35,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:35,696 INFO L225 Difference]: With dead ends: 86 [2024-11-13 16:19:35,696 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 16:19:35,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:35,697 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:35,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 16:19:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2024-11-13 16:19:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 16:19:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2024-11-13 16:19:35,705 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 46 [2024-11-13 16:19:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:35,705 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2024-11-13 16:19:35,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2024-11-13 16:19:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 16:19:35,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:35,707 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:35,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:19:35,708 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:35,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash -53717140, now seen corresponding path program 1 times [2024-11-13 16:19:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:35,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732506650] [2024-11-13 16:19:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 16:19:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 16:19:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 16:19:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-13 16:19:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:19:35,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:35,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732506650] [2024-11-13 16:19:35,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732506650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:35,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:19:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047566432] [2024-11-13 16:19:35,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:35,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:35,846 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:35,928 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2024-11-13 16:19:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-13 16:19:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:35,929 INFO L225 Difference]: With dead ends: 85 [2024-11-13 16:19:35,929 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 16:19:35,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 16:19:35,931 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:35,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 16:19:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-13 16:19:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 16:19:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-13 16:19:35,939 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 49 [2024-11-13 16:19:35,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:35,939 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-13 16:19:35,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:19:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-13 16:19:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 16:19:35,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:35,941 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:35,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:19:35,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:35,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:35,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2128699672, now seen corresponding path program 1 times [2024-11-13 16:19:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:35,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830280637] [2024-11-13 16:19:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:35,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:19:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 16:19:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 16:19:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 16:19:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:36,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:36,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830280637] [2024-11-13 16:19:36,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830280637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:36,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904855640] [2024-11-13 16:19:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:36,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:36,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:36,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:36,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:19:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:19:36,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:36,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:36,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904855640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:36,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:36,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-13 16:19:36,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841306650] [2024-11-13 16:19:36,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:36,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:19:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:19:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:19:36,644 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:19:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:36,888 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-11-13 16:19:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:19:36,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 50 [2024-11-13 16:19:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:36,891 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:19:36,892 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 16:19:36,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:19:36,894 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 72 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:36,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 105 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 16:19:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-13 16:19:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 16:19:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-13 16:19:36,923 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 50 [2024-11-13 16:19:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:36,923 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-13 16:19:36,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:19:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-13 16:19:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 16:19:36,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:36,925 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:36,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:37,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 16:19:37,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:37,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:37,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1142945635, now seen corresponding path program 2 times [2024-11-13 16:19:37,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:37,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512438568] [2024-11-13 16:19:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:37,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:19:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:19:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 16:19:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:19:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:19:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512438568] [2024-11-13 16:19:37,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512438568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:37,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139595509] [2024-11-13 16:19:37,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:37,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:37,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:37,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:37,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:19:37,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:37,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:37,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:19:37,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:37,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:19:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139595509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:37,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-13 16:19:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134110626] [2024-11-13 16:19:37,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:37,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:19:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:19:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:19:37,698 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 16:19:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:37,949 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2024-11-13 16:19:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:19:37,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2024-11-13 16:19:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:37,951 INFO L225 Difference]: With dead ends: 102 [2024-11-13 16:19:37,951 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 16:19:37,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:19:37,952 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:37,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 155 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 16:19:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2024-11-13 16:19:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 16:19:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-13 16:19:37,980 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 52 [2024-11-13 16:19:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:37,981 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-13 16:19:37,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 16:19:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-13 16:19:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:19:37,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:37,985 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:38,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:19:38,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:38,186 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:38,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1168559700, now seen corresponding path program 3 times [2024-11-13 16:19:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:38,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177441426] [2024-11-13 16:19:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:19:38,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000892358] [2024-11-13 16:19:38,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:38,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:38,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:38,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:19:39,698 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 16:19:39,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:39,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-13 16:19:39,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:39,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:19:39,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 16:19:40,267 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-13 16:19:40,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-13 16:19:40,431 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-13 16:19:40,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-13 16:19:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:43,503 INFO L349 Elim1Store]: treesize reduction 508, result has 25.0 percent of original size [2024-11-13 16:19:43,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 122 treesize of output 220 [2024-11-13 16:19:47,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 166 treesize of output 144 [2024-11-13 16:19:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,474 INFO L349 Elim1Store]: treesize reduction 297, result has 0.3 percent of original size [2024-11-13 16:19:47,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 144 treesize of output 242 [2024-11-13 16:19:47,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:47,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:48,111 INFO L349 Elim1Store]: treesize reduction 183, result has 42.5 percent of original size [2024-11-13 16:19:48,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 159 treesize of output 213 [2024-11-13 16:19:58,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:19:58,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 68 [2024-11-13 16:19:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:58,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177441426] [2024-11-13 16:20:03,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:20:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000892358] [2024-11-13 16:20:03,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000892358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:03,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:20:03,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2024-11-13 16:20:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561255018] [2024-11-13 16:20:03,549 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:03,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:20:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:03,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:20:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3276, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 16:20:03,552 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 38 states have internal predecessors, (52), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:20:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:09,405 INFO L93 Difference]: Finished difference Result 168 states and 208 transitions. [2024-11-13 16:20:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 16:20:09,406 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.3) internal successors, (52), 38 states have internal predecessors, (52), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 62 [2024-11-13 16:20:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:09,407 INFO L225 Difference]: With dead ends: 168 [2024-11-13 16:20:09,407 INFO L226 Difference]: Without dead ends: 124 [2024-11-13 16:20:09,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=470, Invalid=3952, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 16:20:09,409 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 103 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:09,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 460 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 16:20:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-13 16:20:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2024-11-13 16:20:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 88 states have internal predecessors, (106), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 16:20:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2024-11-13 16:20:09,451 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 62 [2024-11-13 16:20:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:09,452 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2024-11-13 16:20:09,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.3) internal successors, (52), 38 states have internal predecessors, (52), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:20:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2024-11-13 16:20:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:20:09,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:09,454 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:09,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:20:09,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:09,655 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:09,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1132262890, now seen corresponding path program 1 times [2024-11-13 16:20:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028995866] [2024-11-13 16:20:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:20:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 16:20:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 16:20:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 16:20:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-13 16:20:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028995866] [2024-11-13 16:20:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028995866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:20:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:20:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:20:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253333711] [2024-11-13 16:20:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:20:09,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:20:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:20:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:20:09,774 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 16:20:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:09,828 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2024-11-13 16:20:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:20:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2024-11-13 16:20:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:09,849 INFO L225 Difference]: With dead ends: 149 [2024-11-13 16:20:09,849 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 16:20:09,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:20:09,850 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:09,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:20:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 16:20:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-13 16:20:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 89 states have internal predecessors, (107), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 16:20:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2024-11-13 16:20:09,898 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 62 [2024-11-13 16:20:09,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:09,898 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2024-11-13 16:20:09,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 16:20:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2024-11-13 16:20:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:20:09,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:09,900 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:09,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:20:09,900 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:09,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1095203959, now seen corresponding path program 1 times [2024-11-13 16:20:09,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:09,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482330028] [2024-11-13 16:20:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:20:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 16:20:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 16:20:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 16:20:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 16:20:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482330028] [2024-11-13 16:20:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482330028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586786781] [2024-11-13 16:20:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:10,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:10,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:10,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:20:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:20:10,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 16:20:10,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586786781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:11,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 19 [2024-11-13 16:20:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422179295] [2024-11-13 16:20:11,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:11,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:20:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:11,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:20:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:20:11,012 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-13 16:20:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:11,528 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2024-11-13 16:20:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:20:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 62 [2024-11-13 16:20:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:11,531 INFO L225 Difference]: With dead ends: 237 [2024-11-13 16:20:11,531 INFO L226 Difference]: Without dead ends: 177 [2024-11-13 16:20:11,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:20:11,532 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 38 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:11,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 330 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:20:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-13 16:20:11,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 113. [2024-11-13 16:20:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 92 states have internal predecessors, (109), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-13 16:20:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2024-11-13 16:20:11,573 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 62 [2024-11-13 16:20:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:11,574 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2024-11-13 16:20:11,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-13 16:20:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2024-11-13 16:20:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:20:11,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:11,575 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:11,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:20:11,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:20:11,780 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:11,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1161707048, now seen corresponding path program 1 times [2024-11-13 16:20:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642450632] [2024-11-13 16:20:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:11,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:20:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 16:20:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 16:20:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 16:20:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-13 16:20:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:11,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642450632] [2024-11-13 16:20:11,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642450632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:20:11,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:20:11,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:20:11,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786435321] [2024-11-13 16:20:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:20:11,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:20:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:20:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:20:11,909 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 16:20:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:11,960 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2024-11-13 16:20:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:20:11,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2024-11-13 16:20:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:11,962 INFO L225 Difference]: With dead ends: 159 [2024-11-13 16:20:11,963 INFO L226 Difference]: Without dead ends: 113 [2024-11-13 16:20:11,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:20:11,964 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:11,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:20:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-13 16:20:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-13 16:20:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 92 states have internal predecessors, (108), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-13 16:20:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2024-11-13 16:20:12,014 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 62 [2024-11-13 16:20:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:12,015 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2024-11-13 16:20:12,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 16:20:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2024-11-13 16:20:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:20:12,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:12,016 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:12,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:20:12,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:12,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash -832437658, now seen corresponding path program 1 times [2024-11-13 16:20:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:12,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332765115] [2024-11-13 16:20:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:20:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 16:20:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 16:20:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 16:20:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 16:20:12,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332765115] [2024-11-13 16:20:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332765115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323833584] [2024-11-13 16:20:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:12,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:12,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:12,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:12,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:20:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:12,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 16:20:12,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 16:20:12,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 16:20:12,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323833584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:12,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:12,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 21 [2024-11-13 16:20:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540742646] [2024-11-13 16:20:12,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:12,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:20:12,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:12,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:20:12,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:20:12,996 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 5 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-13 16:20:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:13,482 INFO L93 Difference]: Finished difference Result 240 states and 283 transitions. [2024-11-13 16:20:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 16:20:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 5 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 62 [2024-11-13 16:20:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:13,485 INFO L225 Difference]: With dead ends: 240 [2024-11-13 16:20:13,485 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 16:20:13,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-13 16:20:13,486 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:13,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 269 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:20:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 16:20:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 149. [2024-11-13 16:20:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 122 states have internal predecessors, (143), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 16:20:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 175 transitions. [2024-11-13 16:20:13,560 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 175 transitions. Word has length 62 [2024-11-13 16:20:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:13,561 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 175 transitions. [2024-11-13 16:20:13,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 5 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-13 16:20:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 175 transitions. [2024-11-13 16:20:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 16:20:13,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:13,562 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:13,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:13,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 16:20:13,766 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:13,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:13,766 INFO L85 PathProgramCache]: Analyzing trace with hash -249989667, now seen corresponding path program 4 times [2024-11-13 16:20:13,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:13,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60072729] [2024-11-13 16:20:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:13,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:13,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:20:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:13,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 16:20:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:13,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 16:20:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:13,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 16:20:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 16:20:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60072729] [2024-11-13 16:20:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60072729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923716377] [2024-11-13 16:20:13,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:20:13,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:13,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:13,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:20:14,037 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:20:14,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:14,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:20:14,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 16:20:14,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 16:20:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923716377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:14,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 16:20:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205782669] [2024-11-13 16:20:14,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:14,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:20:14,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:14,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:20:14,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:20:14,298 INFO L87 Difference]: Start difference. First operand 149 states and 175 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 16:20:14,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:14,580 INFO L93 Difference]: Finished difference Result 251 states and 292 transitions. [2024-11-13 16:20:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:20:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2024-11-13 16:20:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:14,585 INFO L225 Difference]: With dead ends: 251 [2024-11-13 16:20:14,587 INFO L226 Difference]: Without dead ends: 159 [2024-11-13 16:20:14,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:20:14,589 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:14,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 223 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-13 16:20:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2024-11-13 16:20:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 125 states have (on average 1.152) internal successors, (144), 125 states have internal predecessors, (144), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 16:20:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2024-11-13 16:20:14,649 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 63 [2024-11-13 16:20:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:14,649 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2024-11-13 16:20:14,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 16:20:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2024-11-13 16:20:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 16:20:14,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:14,651 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:14,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:20:14,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 16:20:14,852 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:14,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 85718664, now seen corresponding path program 5 times [2024-11-13 16:20:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455185623] [2024-11-13 16:20:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:15,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:15,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-13 16:20:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:15,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:20:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:15,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 16:20:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:15,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 16:20:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 16:20:15,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:15,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455185623] [2024-11-13 16:20:15,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455185623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:15,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469541284] [2024-11-13 16:20:15,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:20:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:15,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:15,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:20:15,178 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 16:20:15,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:15,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:20:15,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 16:20:15,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 16:20:15,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469541284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:15,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:15,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-13 16:20:15,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976951635] [2024-11-13 16:20:15,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:15,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:20:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:20:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:20:15,403 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 16:20:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:15,772 INFO L93 Difference]: Finished difference Result 292 states and 342 transitions. [2024-11-13 16:20:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:20:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2024-11-13 16:20:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:15,777 INFO L225 Difference]: With dead ends: 292 [2024-11-13 16:20:15,777 INFO L226 Difference]: Without dead ends: 184 [2024-11-13 16:20:15,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:20:15,778 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:15,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 263 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-13 16:20:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 161. [2024-11-13 16:20:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 134 states have (on average 1.164179104477612) internal successors, (156), 134 states have internal predecessors, (156), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 16:20:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 188 transitions. [2024-11-13 16:20:15,839 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 188 transitions. Word has length 64 [2024-11-13 16:20:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:15,839 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 188 transitions. [2024-11-13 16:20:15,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 16:20:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 188 transitions. [2024-11-13 16:20:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 16:20:15,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:15,842 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:15,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:20:16,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:20:16,047 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:16,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1424731742, now seen corresponding path program 6 times [2024-11-13 16:20:16,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:16,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810265279] [2024-11-13 16:20:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:16,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:16,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:16,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:20:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:16,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 16:20:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:16,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 16:20:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:16,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:20:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 16:20:16,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:16,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810265279] [2024-11-13 16:20:16,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810265279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:16,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958669357] [2024-11-13 16:20:16,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:20:16,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:16,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:16,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:20:16,980 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 16:20:16,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:16,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:20:16,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 57 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 16:20:17,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:20:17,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958669357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:17,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:17,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 16:20:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104228231] [2024-11-13 16:20:17,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:17,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:20:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:20:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:20:17,268 INFO L87 Difference]: Start difference. First operand 161 states and 188 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 16:20:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:17,502 INFO L93 Difference]: Finished difference Result 236 states and 266 transitions. [2024-11-13 16:20:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:20:17,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 69 [2024-11-13 16:20:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:17,504 INFO L225 Difference]: With dead ends: 236 [2024-11-13 16:20:17,506 INFO L226 Difference]: Without dead ends: 152 [2024-11-13 16:20:17,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:20:17,507 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:17,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 266 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-13 16:20:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2024-11-13 16:20:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 122 states have internal predecessors, (138), 14 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-13 16:20:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 168 transitions. [2024-11-13 16:20:17,554 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 168 transitions. Word has length 69 [2024-11-13 16:20:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:17,554 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 168 transitions. [2024-11-13 16:20:17,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 16:20:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 168 transitions. [2024-11-13 16:20:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 16:20:17,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:17,555 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:17,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:20:17,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 16:20:17,760 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:17,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash -257860480, now seen corresponding path program 7 times [2024-11-13 16:20:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926305141] [2024-11-13 16:20:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:20:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601808629] [2024-11-13 16:20:17,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:20:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:17,836 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:20:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:19,184 WARN L253 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-13 16:20:19,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:19,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:20:19,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 16:20:19,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:19,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 16:20:19,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:19,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 16:20:19,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:19,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-13 16:20:19,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:19,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-13 16:20:20,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:20,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-13 16:20:20,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:20,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-13 16:20:20,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:20,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-13 16:20:22,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:22,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:22,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:22,550 INFO L349 Elim1Store]: treesize reduction 336, result has 31.8 percent of original size [2024-11-13 16:20:22,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 39 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 165 case distinctions, treesize of input 144 treesize of output 266 [2024-11-13 16:20:25,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 199 treesize of output 167 [2024-11-13 16:20:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:25,555 INFO L349 Elim1Store]: treesize reduction 318, result has 0.3 percent of original size [2024-11-13 16:20:25,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 54 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 12 case distinctions, treesize of input 167 treesize of output 294 [2024-11-13 16:20:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,196 INFO L349 Elim1Store]: treesize reduction 245, result has 0.4 percent of original size [2024-11-13 16:20:26,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 13 select indices, 13 select index equivalence classes, 84 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 13 case distinctions, treesize of input 244 treesize of output 468 [2024-11-13 16:20:26,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,829 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:26,841 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,907 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:26,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:26,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:26,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,033 INFO L349 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2024-11-13 16:20:27,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 70 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 190 [2024-11-13 16:20:27,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:20:27,171 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:27,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 47 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-13 16:20:35,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:35,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 418 treesize of output 240 [2024-11-13 16:20:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:20:37,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:10,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:10,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926305141] [2024-11-13 16:22:10,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:22:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601808629] [2024-11-13 16:22:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601808629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:10,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:22:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2024-11-13 16:22:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111456417] [2024-11-13 16:22:10,544 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:10,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 16:22:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 16:22:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=4744, Unknown=19, NotChecked=0, Total=5112 [2024-11-13 16:22:10,547 INFO L87 Difference]: Start difference. First operand 148 states and 168 transitions. Second operand has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 46 states have internal predecessors, (68), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:22:17,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:22:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:17,948 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2024-11-13 16:22:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:22:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 46 states have internal predecessors, (68), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 78 [2024-11-13 16:22:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:17,952 INFO L225 Difference]: With dead ends: 293 [2024-11-13 16:22:17,952 INFO L226 Difference]: Without dead ends: 228 [2024-11-13 16:22:17,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2514 ImplicationChecksByTransitivity, 93.7s TimeCoverageRelationStatistics Valid=420, Invalid=5413, Unknown=19, NotChecked=0, Total=5852 [2024-11-13 16:22:17,954 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:17,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 632 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2330 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2024-11-13 16:22:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-13 16:22:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 207. [2024-11-13 16:22:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 174 states have (on average 1.132183908045977) internal successors, (197), 174 states have internal predecessors, (197), 18 states have call successors, (18), 13 states have call predecessors, (18), 14 states have return successors, (21), 19 states have call predecessors, (21), 18 states have call successors, (21) [2024-11-13 16:22:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2024-11-13 16:22:18,024 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 78 [2024-11-13 16:22:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:18,025 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2024-11-13 16:22:18,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 46 states have internal predecessors, (68), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:22:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2024-11-13 16:22:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 16:22:18,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:18,026 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:18,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:18,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 16:22:18,226 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:18,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:18,227 INFO L85 PathProgramCache]: Analyzing trace with hash -795684038, now seen corresponding path program 2 times [2024-11-13 16:22:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183969754] [2024-11-13 16:22:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:22:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113748140] [2024-11-13 16:22:18,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:22:18,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:18,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:18,315 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:18,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eebc04d-83ff-42f4-b66c-617a6a8e1df0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:22:19,121 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:22:19,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:19,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-13 16:22:19,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:19,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:22:19,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 16:22:19,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:19,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 16:22:19,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:19,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2024-11-13 16:22:19,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:19,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2024-11-13 16:22:19,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:19,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:19,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-13 16:22:20,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:20,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-13 16:22:20,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:20,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 94 [2024-11-13 16:22:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:20,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:20,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 108 [2024-11-13 16:22:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:22,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:23,934 INFO L349 Elim1Store]: treesize reduction 952, result has 14.9 percent of original size [2024-11-13 16:22:23,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 36 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 189 case distinctions, treesize of input 198 treesize of output 236 [2024-11-13 16:22:24,848 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-13 16:22:24,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 287 treesize of output 240 [2024-11-13 16:22:24,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:24,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:28,655 INFO L349 Elim1Store]: treesize reduction 1002, result has 6.2 percent of original size [2024-11-13 16:22:28,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 27 case distinctions, treesize of input 170 treesize of output 262 [2024-11-13 16:22:32,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:22:32,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:32,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 84 treesize of output 28 [2024-11-13 16:22:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:22:32,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:41,627 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 785 treesize of output 767 [2024-11-13 16:22:42,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:42,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 578702579454479 treesize of output 541319184110095