./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/vogal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/vogal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB --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 d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:51:46,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:51:46,381 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:51:46,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:51:46,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:51:46,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:51:46,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:51:46,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:51:46,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:51:46,432 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:51:46,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:51:46,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:51:46,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:51:46,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:51:46,433 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:51:46,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:51:46,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:51:46,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:51:46,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:51:46,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:51:46,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:51:46,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:51:46,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:51:46,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:51:46,436 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:51:46,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:51:46,436 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:51:46,436 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:51:46,436 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:51:46,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:51:46,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:51:46,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:51:46,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:51:46,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:51:46,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:51:46,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:51:46,439 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_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB 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 -> d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 [2024-11-28 02:51:46,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:51:46,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:51:46,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:51:46,785 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:51:46,785 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:51:46,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops/vogal-2.i [2024-11-28 02:51:49,658 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/data/ede7bf2c9/6c4289c959304c02b616d82361420883/FLAG65cd43067 [2024-11-28 02:51:49,975 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:51:49,979 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/sv-benchmarks/c/loops/vogal-2.i [2024-11-28 02:51:49,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/data/ede7bf2c9/6c4289c959304c02b616d82361420883/FLAG65cd43067 [2024-11-28 02:51:50,043 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/data/ede7bf2c9/6c4289c959304c02b616d82361420883 [2024-11-28 02:51:50,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:51:50,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:51:50,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:51:50,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:51:50,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:51:50,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a5ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50, skipping insertion in model container [2024-11-28 02:51:50,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:51:50,224 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_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/sv-benchmarks/c/loops/vogal-2.i[808,821] [2024-11-28 02:51:50,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:51:50,258 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:51:50,269 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_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/sv-benchmarks/c/loops/vogal-2.i[808,821] [2024-11-28 02:51:50,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:51:50,299 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:51:50,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50 WrapperNode [2024-11-28 02:51:50,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:51:50,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:51:50,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:51:50,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:51:50,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,335 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2024-11-28 02:51:50,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:51:50,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:51:50,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:51:50,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:51:50,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,360 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 14, 6]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 14 writes are split as follows [0, 12, 2]. [2024-11-28 02:51:50,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,367 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:51:50,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:51:50,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:51:50,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:51:50,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (1/1) ... [2024-11-28 02:51:50,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:51:50,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:50,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:51:50,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:51:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:51:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:51:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:51:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:51:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:51:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:51:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:51:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:51:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:51:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:51:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:51:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:51:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:51:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:51:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:51:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:51:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:51:50,521 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:51:50,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:51:50,806 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 02:51:50,806 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:51:50,824 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:51:50,824 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:51:50,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:50 BoogieIcfgContainer [2024-11-28 02:51:50,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:51:50,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:51:50,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:51:50,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:51:50,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:51:50" (1/3) ... [2024-11-28 02:51:50,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9396f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:50, skipping insertion in model container [2024-11-28 02:51:50,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:50" (2/3) ... [2024-11-28 02:51:50,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9396f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:50, skipping insertion in model container [2024-11-28 02:51:50,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:50" (3/3) ... [2024-11-28 02:51:50,838 INFO L128 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2024-11-28 02:51:50,855 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:51:50,856 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG vogal-2.i that has 1 procedures, 33 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 02:51:50,922 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:51:50,938 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;@5e79100d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:51:50,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:51:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:51:50,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:50,954 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:50,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:50,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2065940079, now seen corresponding path program 1 times [2024-11-28 02:51:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180368965] [2024-11-28 02:51:50,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:51:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180368965] [2024-11-28 02:51:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180368965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:51,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:51,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:51:51,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865091488] [2024-11-28 02:51:51,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:51,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:51:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:51,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:51:51,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:51:51,170 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:51,185 INFO L93 Difference]: Finished difference Result 62 states and 88 transitions. [2024-11-28 02:51:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:51:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 [2024-11-28 02:51:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:51,193 INFO L225 Difference]: With dead ends: 62 [2024-11-28 02:51:51,194 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 02:51:51,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:51:51,199 INFO L435 NwaCegarLoop]: 40 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, 40 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 [2024-11-28 02:51:51,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:51:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 02:51:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-28 02:51:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-28 02:51:51,231 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 12 [2024-11-28 02:51:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:51,232 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-28 02:51:51,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-28 02:51:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:51:51,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:51,233 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:51,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:51:51,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:51,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2055087767, now seen corresponding path program 1 times [2024-11-28 02:51:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305600965] [2024-11-28 02:51:51,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:51:51,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:51,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305600965] [2024-11-28 02:51:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305600965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:51,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:51:51,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643975917] [2024-11-28 02:51:51,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:51,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:51:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:51,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:51:51,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:51:51,526 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:51,593 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2024-11-28 02:51:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:51:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 02:51:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:51,594 INFO L225 Difference]: With dead ends: 75 [2024-11-28 02:51:51,595 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 02:51:51,595 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 [2024-11-28 02:51:51,596 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:51,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 50 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:51:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 02:51:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 30. [2024-11-28 02:51:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-28 02:51:51,601 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-11-28 02:51:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:51,601 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-28 02:51:51,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-28 02:51:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 02:51:51,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:51,602 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:51,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:51:51,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:51,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2062549797, now seen corresponding path program 1 times [2024-11-28 02:51:51,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:51,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288490310] [2024-11-28 02:51:51,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:51:51,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288490310] [2024-11-28 02:51:51,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288490310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020115259] [2024-11-28 02:51:51,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:51,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:51,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:51,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:51,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:51:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:51,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:51:51,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:51:52,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:51:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020115259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:52,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:51:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-28 02:51:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751138018] [2024-11-28 02:51:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:52,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:51:52,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:52,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:51:52,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:51:52,094 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:52,135 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2024-11-28 02:51:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:51:52,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-28 02:51:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:52,138 INFO L225 Difference]: With dead ends: 59 [2024-11-28 02:51:52,138 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 02:51:52,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:51:52,139 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 120 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 [2024-11-28 02:51:52,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 120 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:51:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 02:51:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2024-11-28 02:51:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-28 02:51:52,151 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 16 [2024-11-28 02:51:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:52,151 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-28 02:51:52,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-28 02:51:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:51:52,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:52,153 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:52,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:51:52,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:52,354 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:52,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1586645438, now seen corresponding path program 1 times [2024-11-28 02:51:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850122537] [2024-11-28 02:51:52,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:51:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850122537] [2024-11-28 02:51:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850122537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136384286] [2024-11-28 02:51:52,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:52,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:52,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:51:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:52,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:51:52,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:51:52,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:51:52,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136384286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:51:52,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:51:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75021412] [2024-11-28 02:51:52,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:52,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:51:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:52,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:51:52,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:51:52,774 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:52,807 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2024-11-28 02:51:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:51:52,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-28 02:51:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:52,809 INFO L225 Difference]: With dead ends: 87 [2024-11-28 02:51:52,809 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 02:51:52,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:51:52,810 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 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 [2024-11-28 02:51:52,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:51:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 02:51:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-28 02:51:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2024-11-28 02:51:52,821 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 24 [2024-11-28 02:51:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:52,821 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2024-11-28 02:51:52,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2024-11-28 02:51:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:51:52,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:52,822 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:52,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:51:53,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:53,023 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:53,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 61083148, now seen corresponding path program 1 times [2024-11-28 02:51:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977986756] [2024-11-28 02:51:53,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:51:53,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:53,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977986756] [2024-11-28 02:51:53,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977986756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:53,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623537389] [2024-11-28 02:51:53,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:53,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:53,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:53,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:53,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:51:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:53,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:51:53,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:51:53,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:53,796 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-28 02:51:53,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2024-11-28 02:51:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:51:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623537389] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:51:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 9] total 15 [2024-11-28 02:51:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270705693] [2024-11-28 02:51:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:53,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:51:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:53,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:51:53,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:51:53,836 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:54,089 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2024-11-28 02:51:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:51:54,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-28 02:51:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:54,093 INFO L225 Difference]: With dead ends: 74 [2024-11-28 02:51:54,093 INFO L226 Difference]: Without dead ends: 49 [2024-11-28 02:51:54,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:51:54,095 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:54,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:51:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-28 02:51:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-28 02:51:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 47 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2024-11-28 02:51:54,107 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 25 [2024-11-28 02:51:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:54,107 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2024-11-28 02:51:54,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-11-28 02:51:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 02:51:54,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:54,109 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:51:54,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:51:54,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:54,311 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:54,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:54,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2023583104, now seen corresponding path program 1 times [2024-11-28 02:51:54,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:54,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900701967] [2024-11-28 02:51:54,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:51:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900701967] [2024-11-28 02:51:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900701967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019127358] [2024-11-28 02:51:54,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:54,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:54,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:54,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:51:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:54,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:51:54,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:54,750 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 16 treesize of output 8 [2024-11-28 02:51:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:51:54,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:54,943 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-28 02:51:54,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-11-28 02:51:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:51:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019127358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:54,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2024-11-28 02:51:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519839695] [2024-11-28 02:51:54,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:54,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:51:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:54,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:51:54,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:51:54,977 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:55,213 INFO L93 Difference]: Finished difference Result 157 states and 201 transitions. [2024-11-28 02:51:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:51:55,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-28 02:51:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:55,215 INFO L225 Difference]: With dead ends: 157 [2024-11-28 02:51:55,217 INFO L226 Difference]: Without dead ends: 114 [2024-11-28 02:51:55,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:51:55,219 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 199 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:55,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 147 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:51:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-28 02:51:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 52. [2024-11-28 02:51:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 51 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-11-28 02:51:55,235 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 27 [2024-11-28 02:51:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:55,235 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-11-28 02:51:55,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-11-28 02:51:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:51:55,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:55,237 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:51:55,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:51:55,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:51:55,438 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:55,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -566867758, now seen corresponding path program 1 times [2024-11-28 02:51:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925424117] [2024-11-28 02:51:55,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:51:55,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:55,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925424117] [2024-11-28 02:51:55,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925424117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:55,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545467132] [2024-11-28 02:51:55,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:55,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:55,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:55,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:51:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:55,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:51:55,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:51:55,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:51:55,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545467132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:55,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:55,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-11-28 02:51:55,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397179180] [2024-11-28 02:51:55,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:55,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:51:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:55,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:51:55,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:51:55,828 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:56,315 INFO L93 Difference]: Finished difference Result 367 states and 514 transitions. [2024-11-28 02:51:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:51:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 02:51:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:56,318 INFO L225 Difference]: With dead ends: 367 [2024-11-28 02:51:56,318 INFO L226 Difference]: Without dead ends: 322 [2024-11-28 02:51:56,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:51:56,320 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 414 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:56,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 142 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:51:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-28 02:51:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 90. [2024-11-28 02:51:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 89 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2024-11-28 02:51:56,340 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 30 [2024-11-28 02:51:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:56,340 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2024-11-28 02:51:56,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2024-11-28 02:51:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 02:51:56,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:56,341 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:56,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:51:56,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:51:56,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:56,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:56,546 INFO L85 PathProgramCache]: Analyzing trace with hash 813450782, now seen corresponding path program 2 times [2024-11-28 02:51:56,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:56,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117409062] [2024-11-28 02:51:56,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:51:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:56,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:51:56,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 02:51:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117409062] [2024-11-28 02:51:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117409062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263754967] [2024-11-28 02:51:56,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:51:56,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:56,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:56,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:56,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:51:56,935 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:51:56,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:56,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:51:56,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 02:51:56,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:51:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263754967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:57,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:57,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 15 [2024-11-28 02:51:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737096031] [2024-11-28 02:51:57,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:57,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:51:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:57,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:51:57,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:51:57,157 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:57,850 INFO L93 Difference]: Finished difference Result 730 states and 916 transitions. [2024-11-28 02:51:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:51:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-28 02:51:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:57,853 INFO L225 Difference]: With dead ends: 730 [2024-11-28 02:51:57,854 INFO L226 Difference]: Without dead ends: 649 [2024-11-28 02:51:57,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:51:57,857 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 494 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:57,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 539 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:51:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-28 02:51:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 100. [2024-11-28 02:51:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2024-11-28 02:51:57,897 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 44 [2024-11-28 02:51:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:57,898 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2024-11-28 02:51:57,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2024-11-28 02:51:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 02:51:57,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:57,899 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:57,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:51:58,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:58,104 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:58,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1643503730, now seen corresponding path program 3 times [2024-11-28 02:51:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:58,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630867457] [2024-11-28 02:51:58,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:51:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:58,156 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:51:58,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 02:51:58,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:58,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630867457] [2024-11-28 02:51:58,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630867457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:58,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717014956] [2024-11-28 02:51:58,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:51:58,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:58,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:58,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:58,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:51:58,479 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:51:58,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:58,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:51:58,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:58,499 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 13 treesize of output 9 [2024-11-28 02:51:58,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:51:58,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 7 [2024-11-28 02:51:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-28 02:51:58,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 02:51:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717014956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:58,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:58,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-28 02:51:58,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332578358] [2024-11-28 02:51:58,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:58,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:51:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:58,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:51:58,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:51:58,684 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:59,013 INFO L93 Difference]: Finished difference Result 348 states and 439 transitions. [2024-11-28 02:51:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:51:59,014 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-28 02:51:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:59,016 INFO L225 Difference]: With dead ends: 348 [2024-11-28 02:51:59,017 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 02:51:59,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:51:59,019 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 233 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:59,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 189 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:51:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 02:51:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 111. [2024-11-28 02:51:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 110 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2024-11-28 02:51:59,058 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 54 [2024-11-28 02:51:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:59,058 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2024-11-28 02:51:59,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:51:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2024-11-28 02:51:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:51:59,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:59,059 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:59,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:51:59,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:59,260 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:59,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash 759875896, now seen corresponding path program 4 times [2024-11-28 02:51:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225196894] [2024-11-28 02:51:59,261 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:51:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:59,311 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:51:59,311 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 02:51:59,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225196894] [2024-11-28 02:51:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225196894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408339019] [2024-11-28 02:51:59,684 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:51:59,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:59,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:59,686 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:59,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:51:59,817 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:51:59,817 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:59,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:51:59,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 80 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:51:59,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-28 02:52:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408339019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:52:00,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:52:00,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 7] total 21 [2024-11-28 02:52:00,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91223917] [2024-11-28 02:52:00,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:52:00,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:52:00,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:00,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:52:00,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:52:00,142 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 21 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:06,298 INFO L93 Difference]: Finished difference Result 1785 states and 2471 transitions. [2024-11-28 02:52:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-28 02:52:06,299 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 21 states have internal predecessors, (91), 0 states have call successors, (0), 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 63 [2024-11-28 02:52:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:06,305 INFO L225 Difference]: With dead ends: 1785 [2024-11-28 02:52:06,305 INFO L226 Difference]: Without dead ends: 1693 [2024-11-28 02:52:06,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4561 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1820, Invalid=11290, Unknown=0, NotChecked=0, Total=13110 [2024-11-28 02:52:06,312 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 3037 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 4554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:06,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 2807 Invalid, 4554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 4074 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:52:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-11-28 02:52:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 209. [2024-11-28 02:52:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.2307692307692308) internal successors, (256), 208 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 256 transitions. [2024-11-28 02:52:06,373 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 256 transitions. Word has length 63 [2024-11-28 02:52:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:06,374 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 256 transitions. [2024-11-28 02:52:06,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 21 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 256 transitions. [2024-11-28 02:52:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:52:06,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:06,376 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:06,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:52:06,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:52:06,580 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:06,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:06,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1646515324, now seen corresponding path program 5 times [2024-11-28 02:52:06,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:06,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778473451] [2024-11-28 02:52:06,581 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:52:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:06,791 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-28 02:52:06,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-28 02:52:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778473451] [2024-11-28 02:52:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778473451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62165479] [2024-11-28 02:52:07,224 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:52:07,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:07,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:07,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:07,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:52:09,113 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-28 02:52:09,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:09,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 02:52:09,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-28 02:52:09,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 37 proven. 234 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:52:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62165479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:52:09,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:52:09,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 22] total 33 [2024-11-28 02:52:09,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238848911] [2024-11-28 02:52:09,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:52:09,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:52:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:09,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:52:09,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:52:09,804 INFO L87 Difference]: Start difference. First operand 209 states and 256 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:11,911 INFO L93 Difference]: Finished difference Result 2049 states and 2561 transitions. [2024-11-28 02:52:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:52:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-28 02:52:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:11,918 INFO L225 Difference]: With dead ends: 2049 [2024-11-28 02:52:11,919 INFO L226 Difference]: Without dead ends: 1861 [2024-11-28 02:52:11,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:52:11,921 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 629 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:11,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 3146 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:52:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-28 02:52:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 211. [2024-11-28 02:52:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.2285714285714286) internal successors, (258), 210 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 258 transitions. [2024-11-28 02:52:11,978 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 258 transitions. Word has length 89 [2024-11-28 02:52:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:11,978 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 258 transitions. [2024-11-28 02:52:11,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 258 transitions. [2024-11-28 02:52:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:52:11,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:11,980 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:11,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:52:12,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:12,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:12,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -188702016, now seen corresponding path program 6 times [2024-11-28 02:52:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013093028] [2024-11-28 02:52:12,181 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:52:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:12,232 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 02:52:12,233 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-28 02:52:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013093028] [2024-11-28 02:52:12,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013093028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:12,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:12,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:52:12,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581574588] [2024-11-28 02:52:12,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:12,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:52:12,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:12,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:52:12,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:52:12,736 INFO L87 Difference]: Start difference. First operand 211 states and 258 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:12,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:12,988 INFO L93 Difference]: Finished difference Result 375 states and 462 transitions. [2024-11-28 02:52:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:52:12,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 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 91 [2024-11-28 02:52:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:12,990 INFO L225 Difference]: With dead ends: 375 [2024-11-28 02:52:12,990 INFO L226 Difference]: Without dead ends: 278 [2024-11-28 02:52:12,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:52:12,991 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 64 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:12,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:52:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-28 02:52:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 201. [2024-11-28 02:52:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.225) internal successors, (245), 200 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 245 transitions. [2024-11-28 02:52:13,064 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 245 transitions. Word has length 91 [2024-11-28 02:52:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:13,065 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 245 transitions. [2024-11-28 02:52:13,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:13,065 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 245 transitions. [2024-11-28 02:52:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 02:52:13,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:13,068 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:13,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:52:13,069 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:13,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash -611052261, now seen corresponding path program 1 times [2024-11-28 02:52:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:13,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497685118] [2024-11-28 02:52:13,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:13,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 106 proven. 36 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-28 02:52:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497685118] [2024-11-28 02:52:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497685118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:16,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399103804] [2024-11-28 02:52:16,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:16,211 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:16,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:52:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:16,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-28 02:52:16,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:16,480 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 40 treesize of output 39 [2024-11-28 02:52:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 58 proven. 153 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-28 02:52:18,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:12,987 WARN L286 SmtUtils]: Spent 16.07s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:53:21,000 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:53:45,425 WARN L286 SmtUtils]: Spent 16.07s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:55:05,560 WARN L286 SmtUtils]: Spent 54.19s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:55:47,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:55:47,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 210 [2024-11-28 02:56:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 100 proven. 309 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:56:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399103804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:09,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:09,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 51] total 83 [2024-11-28 02:56:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430480509] [2024-11-28 02:56:09,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:09,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-28 02:56:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:09,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-28 02:56:09,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1338, Invalid=5457, Unknown=11, NotChecked=0, Total=6806 [2024-11-28 02:56:09,765 INFO L87 Difference]: Start difference. First operand 201 states and 245 transitions. Second operand has 83 states, 83 states have (on average 2.63855421686747) internal successors, (219), 83 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:29,348 WARN L286 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 96 DAG size of output: 93 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:59:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:40,110 INFO L93 Difference]: Finished difference Result 4054 states and 5044 transitions. [2024-11-28 02:59:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 632 states. [2024-11-28 02:59:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.63855421686747) internal successors, (219), 83 states have internal predecessors, (219), 0 states have call successors, (0), 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 118 [2024-11-28 02:59:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:40,125 INFO L225 Difference]: With dead ends: 4054 [2024-11-28 02:59:40,125 INFO L226 Difference]: Without dead ends: 3966 [2024-11-28 02:59:40,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198364 ImplicationChecksByTransitivity, 303.8s TimeCoverageRelationStatistics Valid=40244, Invalid=437917, Unknown=11, NotChecked=0, Total=478172 [2024-11-28 02:59:40,231 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 7179 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 11398 mSolverCounterSat, 1571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7179 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 12969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1571 IncrementalHoareTripleChecker+Valid, 11398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:40,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7179 Valid, 2664 Invalid, 12969 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1571 Valid, 11398 Invalid, 0 Unknown, 0 Unchecked, 48.1s Time] [2024-11-28 02:59:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2024-11-28 02:59:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 431. [2024-11-28 02:59:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.186046511627907) internal successors, (510), 430 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 510 transitions. [2024-11-28 02:59:40,460 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 510 transitions. Word has length 118 [2024-11-28 02:59:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:40,461 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 510 transitions. [2024-11-28 02:59:40,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.63855421686747) internal successors, (219), 83 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 510 transitions. [2024-11-28 02:59:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 02:59:40,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:40,463 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 8, 8, 7, 6, 4, 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] [2024-11-28 02:59:40,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:59:40,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:40,668 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:40,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1468978657, now seen corresponding path program 1 times [2024-11-28 02:59:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484609020] [2024-11-28 02:59:40,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 84 proven. 10 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-28 02:59:44,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:44,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484609020] [2024-11-28 02:59:44,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484609020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:44,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687423174] [2024-11-28 02:59:44,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:44,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:44,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:44,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b0b1a-b7fe-4881-8ed2-b7a9c80b647a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:59:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:44,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 02:59:44,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:48,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:59:48,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 144 [2024-11-28 02:59:48,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:59:48,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 50 [2024-11-28 02:59:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 107 proven. 202 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 02:59:49,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:55,036 INFO L349 Elim1Store]: treesize reduction 31, result has 47.5 percent of original size [2024-11-28 02:59:55,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 176 treesize of output 142 [2024-11-28 02:59:55,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:59:55,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 126 [2024-11-28 02:59:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 139 proven. 106 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-28 02:59:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687423174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:57,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:57,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 23] total 53 [2024-11-28 02:59:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224255195] [2024-11-28 02:59:57,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:57,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 02:59:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:57,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 02:59:57,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:59:57,533 INFO L87 Difference]: Start difference. First operand 431 states and 510 transitions. Second operand has 53 states, 53 states have (on average 3.3773584905660377) internal successors, (179), 53 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:09,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:00:13,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:00:17,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:00:21,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:00:42,085 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 68 DAG size of output: 62 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:00:46,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 03:00:50,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:01:23,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:01:27,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:01:31,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 03:01:51,733 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 97 DAG size of output: 89 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:03:24,453 WARN L286 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 104 DAG size of output: 85 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:03:59,026 WARN L286 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 115 DAG size of output: 105 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:05:34,066 WARN L286 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 130 DAG size of output: 104 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:06:09,811 WARN L286 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 106 DAG size of output: 96 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:06:15,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]