./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC --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 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:02:22,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:02:22,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:02:22,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:02:22,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:02:22,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:02:22,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:02:22,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:02:22,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:02:22,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:02:22,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:02:22,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:02:22,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:02:22,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:02:22,488 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:02:22,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:02:22,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:02:22,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:02:22,489 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:02:22,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:02:22,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:02:22,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:02:22,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:02:22,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:02:22,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:02:22,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:02:22,491 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:02:22,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:02:22,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:02:22,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:02:22,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:02:22,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:02:22,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:02:22,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:02:22,493 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_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC 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 -> 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e [2024-11-24 01:02:22,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:02:22,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:02:22,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:02:22,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:02:22,827 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:02:22,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2024-11-24 01:02:25,768 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/data/968a85b70/aec8e25b8cd649d1baf8e70724b71162/FLAG93e460154 [2024-11-24 01:02:26,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:02:26,087 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2024-11-24 01:02:26,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/data/968a85b70/aec8e25b8cd649d1baf8e70724b71162/FLAG93e460154 [2024-11-24 01:02:26,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/data/968a85b70/aec8e25b8cd649d1baf8e70724b71162 [2024-11-24 01:02:26,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:02:26,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:02:26,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:02:26,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:02:26,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:02:26,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bacff59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26, skipping insertion in model container [2024-11-24 01:02:26,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:02:26,500 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_21c0075b-18e3-435f-bff4-85936bed9484/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i[920,933] [2024-11-24 01:02:26,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:02:26,535 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:02:26,551 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_21c0075b-18e3-435f-bff4-85936bed9484/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i[920,933] [2024-11-24 01:02:26,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:02:26,585 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:02:26,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26 WrapperNode [2024-11-24 01:02:26,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:02:26,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:02:26,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:02:26,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:02:26,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,628 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-24 01:02:26,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:02:26,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:02:26,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:02:26,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:02:26,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,664 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-24 01:02:26,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,669 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:02:26,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:02:26,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:02:26,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:02:26,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (1/1) ... [2024-11-24 01:02:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:02:26,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:26,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:02:26,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:02:26,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:02:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:02:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:02:26,850 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:02:26,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:02:26,989 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-24 01:02:26,989 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:02:26,999 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:02:26,999 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:02:26,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:02:26 BoogieIcfgContainer [2024-11-24 01:02:26,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:02:27,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:02:27,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:02:27,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:02:27,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:02:26" (1/3) ... [2024-11-24 01:02:27,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187b00da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:02:27, skipping insertion in model container [2024-11-24 01:02:27,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:02:26" (2/3) ... [2024-11-24 01:02:27,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187b00da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:02:27, skipping insertion in model container [2024-11-24 01:02:27,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:02:26" (3/3) ... [2024-11-24 01:02:27,010 INFO L128 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.i [2024-11-24 01:02:27,028 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:02:27,029 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG simple_array_index_value_3.i that has 1 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-24 01:02:27,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:02:27,123 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;@5187638e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:02:27,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:02:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:02:27,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:27,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:27,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:27,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1101247859, now seen corresponding path program 1 times [2024-11-24 01:02:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883020951] [2024-11-24 01:02:27,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:27,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:27,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883020951] [2024-11-24 01:02:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883020951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513293544] [2024-11-24 01:02:27,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:27,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:27,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:27,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:27,486 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:27,533 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2024-11-24 01:02:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 01:02:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:27,542 INFO L225 Difference]: With dead ends: 32 [2024-11-24 01:02:27,542 INFO L226 Difference]: Without dead ends: 15 [2024-11-24 01:02:27,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:27,548 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:27,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:02:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-24 01:02:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-24 01:02:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-24 01:02:27,580 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2024-11-24 01:02:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:27,580 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-24 01:02:27,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-24 01:02:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:02:27,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:27,582 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:27,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:02:27,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:27,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1101307441, now seen corresponding path program 1 times [2024-11-24 01:02:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626522380] [2024-11-24 01:02:27,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:27,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626522380] [2024-11-24 01:02:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626522380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:27,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787684953] [2024-11-24 01:02:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:27,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:02:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:27,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:02:27,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:27,722 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:27,757 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-24 01:02:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:02:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 01:02:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:27,758 INFO L225 Difference]: With dead ends: 38 [2024-11-24 01:02:27,758 INFO L226 Difference]: Without dead ends: 27 [2024-11-24 01:02:27,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:27,759 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:27,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:02:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-24 01:02:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2024-11-24 01:02:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-24 01:02:27,763 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-11-24 01:02:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:27,763 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-24 01:02:27,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-24 01:02:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 01:02:27,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:27,764 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:27,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:02:27,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:27,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash 839136885, now seen corresponding path program 1 times [2024-11-24 01:02:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:27,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524771174] [2024-11-24 01:02:27,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524771174] [2024-11-24 01:02:28,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524771174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111974827] [2024-11-24 01:02:28,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:28,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:28,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:28,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:28,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:02:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:28,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 01:02:28,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:28,196 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 [2024-11-24 01:02:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:28,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:28,704 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 44 treesize of output 40 [2024-11-24 01:02:28,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:02:28,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 87 [2024-11-24 01:02:28,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:02:28,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2024-11-24 01:02:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:28,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111974827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:28,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:02:28,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 9] total 14 [2024-11-24 01:02:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584789496] [2024-11-24 01:02:28,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:28,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:02:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:28,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:02:28,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:02:28,947 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:29,230 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-24 01:02:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:02:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 01:02:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:29,231 INFO L225 Difference]: With dead ends: 50 [2024-11-24 01:02:29,231 INFO L226 Difference]: Without dead ends: 39 [2024-11-24 01:02:29,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:02:29,233 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:29,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 50 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:02:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-24 01:02:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 18. [2024-11-24 01:02:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-24 01:02:29,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2024-11-24 01:02:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:29,237 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-24 01:02:29,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-24 01:02:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:02:29,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:29,238 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:29,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:02:29,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-24 01:02:29,443 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:29,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1998664263, now seen corresponding path program 2 times [2024-11-24 01:02:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326556499] [2024-11-24 01:02:29,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:02:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:29,483 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:02:29,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326556499] [2024-11-24 01:02:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326556499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748828068] [2024-11-24 01:02:29,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:02:29,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:29,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:29,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:29,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:02:29,717 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:02:29,717 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:29,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 01:02:29,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:29,767 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 [2024-11-24 01:02:29,808 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 21 treesize of output 20 [2024-11-24 01:02:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:29,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:30,355 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 44 treesize of output 40 [2024-11-24 01:02:30,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:02:30,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 87 [2024-11-24 01:02:30,420 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:02:30,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:02:30,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 75 treesize of output 30 [2024-11-24 01:02:30,451 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-24 01:02:30,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 10 [2024-11-24 01:02:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748828068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:30,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:02:30,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 11] total 17 [2024-11-24 01:02:30,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725334605] [2024-11-24 01:02:30,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:30,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:02:30,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:30,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:02:30,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:02:30,528 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:31,664 INFO L93 Difference]: Finished difference Result 135 states and 152 transitions. [2024-11-24 01:02:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-24 01:02:31,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 01:02:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:31,666 INFO L225 Difference]: With dead ends: 135 [2024-11-24 01:02:31,666 INFO L226 Difference]: Without dead ends: 124 [2024-11-24 01:02:31,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 01:02:31,672 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 225 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:31,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 78 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:02:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-24 01:02:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 30. [2024-11-24 01:02:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-24 01:02:31,684 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 14 [2024-11-24 01:02:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:31,684 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-24 01:02:31,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-24 01:02:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:02:31,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:31,685 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:31,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:02:31,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:31,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:31,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 47980745, now seen corresponding path program 3 times [2024-11-24 01:02:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:31,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288151244] [2024-11-24 01:02:31,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:02:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:32,020 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-24 01:02:32,020 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:32,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:32,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288151244] [2024-11-24 01:02:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288151244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216052418] [2024-11-24 01:02:32,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:02:32,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:32,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:32,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:32,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:02:32,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-24 01:02:32,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:32,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:02:32,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:32,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216052418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:33,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:02:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-11-24 01:02:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810263494] [2024-11-24 01:02:33,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:33,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:02:33,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:33,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:02:33,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:02:33,099 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:34,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:34,360 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2024-11-24 01:02:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:02:34,360 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 01:02:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:34,361 INFO L225 Difference]: With dead ends: 188 [2024-11-24 01:02:34,361 INFO L226 Difference]: Without dead ends: 173 [2024-11-24 01:02:34,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:02:34,363 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 514 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:34,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 267 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:02:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-24 01:02:34,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 42. [2024-11-24 01:02:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-24 01:02:34,373 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 22 [2024-11-24 01:02:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:34,374 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-24 01:02:34,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-24 01:02:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 01:02:34,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:34,375 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:34,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:02:34,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:34,576 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:02:34,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1582131479, now seen corresponding path program 4 times [2024-11-24 01:02:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:02:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082601391] [2024-11-24 01:02:34,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:02:34,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:02:34,629 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:02:34,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:35,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:02:35,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082601391] [2024-11-24 01:02:35,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082601391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:02:35,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38558721] [2024-11-24 01:02:35,627 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:02:35,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:35,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:35,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:02:35,805 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:02:35,805 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:02:35,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 01:02:35,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:35,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38558721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:36,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:02:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 35 [2024-11-24 01:02:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296096705] [2024-11-24 01:02:36,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:36,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 01:02:36,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:02:36,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 01:02:36,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:02:36,618 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:03:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:03:11,944 INFO L93 Difference]: Finished difference Result 376 states and 424 transitions. [2024-11-24 01:03:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-24 01:03:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-24 01:03:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:03:11,946 INFO L225 Difference]: With dead ends: 376 [2024-11-24 01:03:11,947 INFO L226 Difference]: Without dead ends: 365 [2024-11-24 01:03:11,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=3004, Invalid=8768, Unknown=0, NotChecked=0, Total=11772 [2024-11-24 01:03:11,953 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 1626 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:03:11,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 808 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:03:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-24 01:03:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 74. [2024-11-24 01:03:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:03:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2024-11-24 01:03:11,970 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 38 [2024-11-24 01:03:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:03:11,970 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2024-11-24 01:03:11,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:03:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2024-11-24 01:03:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:03:11,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:11,972 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:03:11,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:03:12,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:12,173 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:03:12,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 680444713, now seen corresponding path program 5 times [2024-11-24 01:03:12,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:03:12,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055757300] [2024-11-24 01:03:12,174 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:03:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:03:12,567 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-24 01:03:12,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:03:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:03:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055757300] [2024-11-24 01:03:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055757300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:03:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124015082] [2024-11-24 01:03:14,035 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:03:14,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:14,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:14,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c0075b-18e3-435f-bff4-85936bed9484/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process