./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.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_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/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_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/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_c7d8f8c6-e190-4215-abda-03020212c94b/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 ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:24:50,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:24:50,425 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:24:50,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:24:50,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:24:50,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:24:50,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:24:50,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:24:50,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:24:50,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:24:50,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:24:50,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:24:50,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:24:50,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:24:50,468 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:24:50,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:24:50,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:24:50,469 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:24:50,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:24:50,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:24:50,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:24:50,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:24:50,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:24:50,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:24:50,470 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:24:50,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:24:50,471 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:24:50,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:24:50,471 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:24:50,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:50,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:50,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:50,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:50,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:24:50,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:50,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:50,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:50,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:24:50,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:24:50,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:24:50,474 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_c7d8f8c6-e190-4215-abda-03020212c94b/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 -> ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 [2024-11-28 05:24:50,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:24:50,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:24:50,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:24:50,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:24:50,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:24:50,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i [2024-11-28 05:24:54,087 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/data/5e25df0a6/1d2e6b2e25744f1c8fff3e2ac94b7144/FLAG3f562370d [2024-11-28 05:24:54,444 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:24:54,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i [2024-11-28 05:24:54,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/data/5e25df0a6/1d2e6b2e25744f1c8fff3e2ac94b7144/FLAG3f562370d [2024-11-28 05:24:54,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/data/5e25df0a6/1d2e6b2e25744f1c8fff3e2ac94b7144 [2024-11-28 05:24:54,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:24:54,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:24:54,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:54,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:24:54,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:24:54,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:54" (1/1) ... [2024-11-28 05:24:54,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed38602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:54, skipping insertion in model container [2024-11-28 05:24:54,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:54" (1/1) ... [2024-11-28 05:24:54,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:24:54,995 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_c7d8f8c6-e190-4215-abda-03020212c94b/sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i[23603,23616] [2024-11-28 05:24:55,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:55,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:24:55,196 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_c7d8f8c6-e190-4215-abda-03020212c94b/sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i[23603,23616] [2024-11-28 05:24:55,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:55,306 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:24:55,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55 WrapperNode [2024-11-28 05:24:55,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:55,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:55,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:24:55,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:24:55,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,385 INFO L138 Inliner]: procedures = 145, calls = 309, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 461 [2024-11-28 05:24:55,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:55,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:24:55,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:24:55,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:24:55,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,465 INFO L175 MemorySlicer]: Split 158 memory accesses to 18 slices as follows [2, 8, 0, 8, 5, 8, 29, 21, 7, 7, 9, 7, 5, 5, 13, 5, 13, 6]. 18 percent of accesses are in the largest equivalence class. The 43 initializations are split as follows [2, 3, 0, 3, 0, 3, 9, 9, 3, 3, 3, 3, 0, 0, 0, 0, 0, 2]. The 39 writes are split as follows [0, 2, 0, 2, 1, 2, 11, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 2]. [2024-11-28 05:24:55,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,515 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:24:55,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:24:55,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:24:55,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:24:55,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:55,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:24:55,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 05:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 05:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-28 05:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-28 05:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-28 05:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-28 05:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 05:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-28 05:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-28 05:24:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-28 05:24:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 05:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-28 05:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-28 05:24:55,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-28 05:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 05:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 05:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:24:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:24:55,939 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:24:55,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:24:58,625 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-28 05:24:58,625 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:24:58,638 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:24:58,638 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:24:58,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:58 BoogieIcfgContainer [2024-11-28 05:24:58,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:24:58,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:24:58,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:24:58,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:24:58,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:24:54" (1/3) ... [2024-11-28 05:24:58,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c640db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:58, skipping insertion in model container [2024-11-28 05:24:58,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (2/3) ... [2024-11-28 05:24:58,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c640db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:58, skipping insertion in model container [2024-11-28 05:24:58,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:58" (3/3) ... [2024-11-28 05:24:58,650 INFO L128 eAbstractionObserver]: Analyzing ICFG cs_dekker_unfair.i [2024-11-28 05:24:58,667 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:24:58,668 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cs_dekker_unfair.i that has 6 procedures, 120 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 05:24:58,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:24:58,760 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;@5dd2c2c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:24:58,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:24:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 79 states have internal predecessors, (104), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:24:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 05:24:58,790 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:58,790 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:24:58,791 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:58,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2069380907, now seen corresponding path program 1 times [2024-11-28 05:24:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602167391] [2024-11-28 05:24:58,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:58,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 05:24:59,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:59,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602167391] [2024-11-28 05:24:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602167391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:59,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:59,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:24:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967350719] [2024-11-28 05:24:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:59,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:24:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:59,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:24:59,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:59,863 INFO L87 Difference]: Start difference. First operand has 120 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 79 states have internal predecessors, (104), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 05:24:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:59,991 INFO L93 Difference]: Finished difference Result 243 states and 388 transitions. [2024-11-28 05:24:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:24:59,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2024-11-28 05:24:59,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:00,006 INFO L225 Difference]: With dead ends: 243 [2024-11-28 05:25:00,006 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 05:25:00,013 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 05:25:00,019 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 5 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:00,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 329 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:25:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 05:25:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2024-11-28 05:25:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:25:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2024-11-28 05:25:00,100 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 132 [2024-11-28 05:25:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:00,101 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 167 transitions. [2024-11-28 05:25:00,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 05:25:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 167 transitions. [2024-11-28 05:25:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:25:00,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:00,110 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:00,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:25:00,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:00,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -111137523, now seen corresponding path program 1 times [2024-11-28 05:25:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215208376] [2024-11-28 05:25:00,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 05:25:00,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:00,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215208376] [2024-11-28 05:25:00,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215208376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:00,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:00,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:00,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050635982] [2024-11-28 05:25:00,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:00,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:00,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:00,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:00,667 INFO L87 Difference]: Start difference. First operand 117 states and 167 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 05:25:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:00,740 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2024-11-28 05:25:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 136 [2024-11-28 05:25:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:00,744 INFO L225 Difference]: With dead ends: 233 [2024-11-28 05:25:00,746 INFO L226 Difference]: Without dead ends: 119 [2024-11-28 05:25:00,748 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 05:25:00,748 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 1 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:00,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 325 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-28 05:25:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-28 05:25:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 77 states have internal predecessors, (98), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:25:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 168 transitions. [2024-11-28 05:25:00,780 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 168 transitions. Word has length 136 [2024-11-28 05:25:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:00,781 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 168 transitions. [2024-11-28 05:25:00,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 05:25:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 168 transitions. [2024-11-28 05:25:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:25:00,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:00,788 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:00,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:25:00,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:00,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash -872582063, now seen corresponding path program 1 times [2024-11-28 05:25:00,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:00,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066408034] [2024-11-28 05:25:00,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 05:25:01,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:01,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066408034] [2024-11-28 05:25:01,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066408034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:01,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097701530] [2024-11-28 05:25:01,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:01,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:01,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:01,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:01,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:25:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:01,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:25:02,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 05:25:02,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 05:25:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097701530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:25:02,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:25:02,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-28 05:25:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942354925] [2024-11-28 05:25:02,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:02,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:02,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:02,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:02,346 INFO L87 Difference]: Start difference. First operand 118 states and 168 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-28 05:25:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:02,436 INFO L93 Difference]: Finished difference Result 237 states and 339 transitions. [2024-11-28 05:25:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 138 [2024-11-28 05:25:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:02,442 INFO L225 Difference]: With dead ends: 237 [2024-11-28 05:25:02,442 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 05:25:02,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:02,447 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 1 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:02,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 486 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:02,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 05:25:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-28 05:25:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 81 states have internal predecessors, (102), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:25:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 172 transitions. [2024-11-28 05:25:02,476 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 172 transitions. Word has length 138 [2024-11-28 05:25:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:02,477 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 172 transitions. [2024-11-28 05:25:02,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-28 05:25:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 172 transitions. [2024-11-28 05:25:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 05:25:02,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:02,484 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:02,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:25:02,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:02,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:02,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1798963239, now seen corresponding path program 2 times [2024-11-28 05:25:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:02,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964507185] [2024-11-28 05:25:02,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:25:02,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:02,927 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:25:02,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:25:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-28 05:25:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:03,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964507185] [2024-11-28 05:25:03,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964507185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:03,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190030652] [2024-11-28 05:25:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:03,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:03,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:03,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:03,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:03,247 INFO L87 Difference]: Start difference. First operand 122 states and 172 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 05:25:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:03,326 INFO L93 Difference]: Finished difference Result 228 states and 329 transitions. [2024-11-28 05:25:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2024-11-28 05:25:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:03,333 INFO L225 Difference]: With dead ends: 228 [2024-11-28 05:25:03,334 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 05:25:03,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:25:03,336 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 107 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:03,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 510 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 05:25:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 05:25:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 122 states have internal predecessors, (159), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-28 05:25:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 261 transitions. [2024-11-28 05:25:03,385 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 261 transitions. Word has length 142 [2024-11-28 05:25:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:03,386 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 261 transitions. [2024-11-28 05:25:03,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 05:25:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 261 transitions. [2024-11-28 05:25:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-28 05:25:03,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:03,393 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:03,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:25:03,394 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:03,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1378053742, now seen corresponding path program 1 times [2024-11-28 05:25:03,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:03,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194687862] [2024-11-28 05:25:03,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-28 05:25:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194687862] [2024-11-28 05:25:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194687862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409893549] [2024-11-28 05:25:04,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:04,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:04,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:04,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:25:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:04,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:25:04,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-28 05:25:05,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-28 05:25:05,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409893549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:25:05,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:25:05,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-28 05:25:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031172616] [2024-11-28 05:25:05,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:05,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:05,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:05,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:05,627 INFO L87 Difference]: Start difference. First operand 182 states and 261 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-28 05:25:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:05,730 INFO L93 Difference]: Finished difference Result 371 states and 531 transitions. [2024-11-28 05:25:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 226 [2024-11-28 05:25:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:05,733 INFO L225 Difference]: With dead ends: 371 [2024-11-28 05:25:05,733 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 05:25:05,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:05,735 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 5 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:05,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 640 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:25:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 05:25:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-28 05:25:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 142 states have (on average 1.2746478873239437) internal successors, (181), 142 states have internal predecessors, (181), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-28 05:25:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 283 transitions. [2024-11-28 05:25:05,758 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 283 transitions. Word has length 226 [2024-11-28 05:25:05,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:05,758 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 283 transitions. [2024-11-28 05:25:05,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-28 05:25:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 283 transitions. [2024-11-28 05:25:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 05:25:05,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:05,769 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:05,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:25:05,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:05,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:05,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:05,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1720582466, now seen corresponding path program 2 times [2024-11-28 05:25:05,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:05,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723610031] [2024-11-28 05:25:05,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:25:05,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:06,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:25:06,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:25:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-11-28 05:25:06,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:06,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723610031] [2024-11-28 05:25:06,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723610031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:06,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:06,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716530889] [2024-11-28 05:25:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:06,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:06,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:06,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:06,587 INFO L87 Difference]: Start difference. First operand 202 states and 283 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 05:25:08,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:25:12,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:25:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:12,956 INFO L93 Difference]: Finished difference Result 512 states and 737 transitions. [2024-11-28 05:25:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 246 [2024-11-28 05:25:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:12,961 INFO L225 Difference]: With dead ends: 512 [2024-11-28 05:25:12,961 INFO L226 Difference]: Without dead ends: 360 [2024-11-28 05:25:12,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:25:12,963 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 146 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:12,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 669 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2024-11-28 05:25:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-28 05:25:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2024-11-28 05:25:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 240 states have (on average 1.2875) internal successors, (309), 240 states have internal predecessors, (309), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (110), 95 states have call predecessors, (110), 95 states have call successors, (110) [2024-11-28 05:25:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 514 transitions. [2024-11-28 05:25:13,033 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 514 transitions. Word has length 246 [2024-11-28 05:25:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:13,034 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 514 transitions. [2024-11-28 05:25:13,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 05:25:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 514 transitions. [2024-11-28 05:25:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 05:25:13,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:13,044 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:13,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:25:13,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:13,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash -757340642, now seen corresponding path program 1 times [2024-11-28 05:25:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:13,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101030230] [2024-11-28 05:25:13,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:13,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-11-28 05:25:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101030230] [2024-11-28 05:25:14,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101030230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:14,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:14,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580254867] [2024-11-28 05:25:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:14,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:14,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:14,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:14,354 INFO L87 Difference]: Start difference. First operand 356 states and 514 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 05:25:15,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:25:18,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:25:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:18,618 INFO L93 Difference]: Finished difference Result 636 states and 911 transitions. [2024-11-28 05:25:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 246 [2024-11-28 05:25:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:18,625 INFO L225 Difference]: With dead ends: 636 [2024-11-28 05:25:18,626 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 05:25:18,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:25:18,632 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 142 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:18,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 673 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 05:25:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 05:25:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2024-11-28 05:25:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 216 states have (on average 1.2407407407407407) internal successors, (268), 216 states have internal predecessors, (268), 85 states have call successors, (85), 18 states have call predecessors, (85), 18 states have return successors, (93), 85 states have call predecessors, (93), 85 states have call successors, (93) [2024-11-28 05:25:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 446 transitions. [2024-11-28 05:25:18,696 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 446 transitions. Word has length 246 [2024-11-28 05:25:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:18,697 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 446 transitions. [2024-11-28 05:25:18,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 05:25:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 446 transitions. [2024-11-28 05:25:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 05:25:18,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:18,706 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:18,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:25:18,706 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:18,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2141053570, now seen corresponding path program 1 times [2024-11-28 05:25:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623829825] [2024-11-28 05:25:18,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:18,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-11-28 05:25:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623829825] [2024-11-28 05:25:19,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623829825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181588823] [2024-11-28 05:25:19,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:19,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:19,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:25:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:20,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 05:25:20,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2024-11-28 05:25:21,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181588823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:21,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:25:21,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-28 05:25:21,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922000110] [2024-11-28 05:25:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:21,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:25:21,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:21,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:25:21,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:25:21,381 INFO L87 Difference]: Start difference. First operand 320 states and 446 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-28 05:25:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:23,148 INFO L93 Difference]: Finished difference Result 827 states and 1156 transitions. [2024-11-28 05:25:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:25:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 246 [2024-11-28 05:25:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:23,157 INFO L225 Difference]: With dead ends: 827 [2024-11-28 05:25:23,159 INFO L226 Difference]: Without dead ends: 535 [2024-11-28 05:25:23,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:25:23,163 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 208 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:23,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 503 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 05:25:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-28 05:25:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 524. [2024-11-28 05:25:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 344 states have (on average 1.1686046511627908) internal successors, (402), 343 states have internal predecessors, (402), 142 states have call successors, (142), 31 states have call predecessors, (142), 37 states have return successors, (170), 149 states have call predecessors, (170), 142 states have call successors, (170) [2024-11-28 05:25:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 714 transitions. [2024-11-28 05:25:23,278 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 714 transitions. Word has length 246 [2024-11-28 05:25:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:23,279 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 714 transitions. [2024-11-28 05:25:23,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-28 05:25:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 714 transitions. [2024-11-28 05:25:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 05:25:23,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:23,287 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:23,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:23,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:23,488 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:23,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash 158611004, now seen corresponding path program 1 times [2024-11-28 05:25:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138459635] [2024-11-28 05:25:23,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:23,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-11-28 05:25:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138459635] [2024-11-28 05:25:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138459635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062360607] [2024-11-28 05:25:24,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:24,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:24,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:24,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:25:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:25,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:25:25,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 400 proven. 4 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2024-11-28 05:25:26,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-11-28 05:25:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062360607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:25:27,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:25:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-28 05:25:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130466483] [2024-11-28 05:25:27,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:27,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:25:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:27,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:25:27,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:25:27,115 INFO L87 Difference]: Start difference. First operand 524 states and 714 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2024-11-28 05:25:30,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:25:31,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:31,881 INFO L93 Difference]: Finished difference Result 1059 states and 1470 transitions. [2024-11-28 05:25:31,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:25:31,882 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) Word has length 246 [2024-11-28 05:25:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:31,890 INFO L225 Difference]: With dead ends: 1059 [2024-11-28 05:25:31,890 INFO L226 Difference]: Without dead ends: 587 [2024-11-28 05:25:31,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:25:31,894 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 270 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:31,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 661 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 05:25:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-28 05:25:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 562. [2024-11-28 05:25:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 380 states have (on average 1.2) internal successors, (456), 380 states have internal predecessors, (456), 126 states have call successors, (126), 44 states have call predecessors, (126), 55 states have return successors, (180), 137 states have call predecessors, (180), 126 states have call successors, (180) [2024-11-28 05:25:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 762 transitions. [2024-11-28 05:25:31,992 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 762 transitions. Word has length 246 [2024-11-28 05:25:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:31,994 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 762 transitions. [2024-11-28 05:25:31,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2024-11-28 05:25:31,995 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 762 transitions. [2024-11-28 05:25:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 05:25:32,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:32,001 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:32,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:25:32,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:32,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:32,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1972363236, now seen corresponding path program 1 times [2024-11-28 05:25:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549924409] [2024-11-28 05:25:32,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-11-28 05:25:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549924409] [2024-11-28 05:25:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549924409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127498150] [2024-11-28 05:25:35,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:35,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:35,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:35,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:35,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:25:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:36,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 05:25:36,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:37,472 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 05:25:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:25:48,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:25:48,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2024-11-28 05:25:52,940 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-28 05:25:52,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2024-11-28 05:26:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 472 proven. 4 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-28 05:26:29,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:30,382 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 25 treesize of output 23 [2024-11-28 05:26:30,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35 treesize of output 31 [2024-11-28 05:26:31,443 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 20 treesize of output 18 [2024-11-28 05:26:31,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-28 05:26:31,574 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 20 treesize of output 18 [2024-11-28 05:26:31,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-28 05:26:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-11-28 05:26:31,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127498150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:26:31,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:26:31,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 9] total 38 [2024-11-28 05:26:31,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739730047] [2024-11-28 05:26:31,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:26:31,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 05:26:31,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:31,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 05:26:31,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1258, Unknown=3, NotChecked=0, Total=1406 [2024-11-28 05:26:31,882 INFO L87 Difference]: Start difference. First operand 562 states and 762 transitions. Second operand has 38 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 19 states have call successors, (71), 12 states have call predecessors, (71), 14 states have return successors, (71), 17 states have call predecessors, (71), 19 states have call successors, (71) [2024-11-28 05:26:33,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:26:37,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:26:41,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:26:45,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:26:47,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:26:51,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:26:52,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:26:57,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:26:58,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:00,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:04,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:08,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:09,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:13,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:17,408 WARN L539 Checker$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 05:27:20,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:30,936 INFO L93 Difference]: Finished difference Result 1143 states and 1614 transitions. [2024-11-28 05:27:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:27:30,937 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 19 states have call successors, (71), 12 states have call predecessors, (71), 14 states have return successors, (71), 17 states have call predecessors, (71), 19 states have call successors, (71) Word has length 246 [2024-11-28 05:27:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:30,944 INFO L225 Difference]: With dead ends: 1143 [2024-11-28 05:27:30,944 INFO L226 Difference]: Without dead ends: 667 [2024-11-28 05:27:30,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 469 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=678, Invalid=3609, Unknown=3, NotChecked=0, Total=4290 [2024-11-28 05:27:30,948 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 705 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 679 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:30,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1923 Invalid, 3598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [679 Valid, 2910 Invalid, 9 Unknown, 0 Unchecked, 56.0s Time] [2024-11-28 05:27:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-28 05:27:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 612. [2024-11-28 05:27:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 409 states have (on average 1.1931540342298288) internal successors, (488), 408 states have internal predecessors, (488), 142 states have call successors, (142), 44 states have call predecessors, (142), 60 states have return successors, (232), 159 states have call predecessors, (232), 142 states have call successors, (232) [2024-11-28 05:27:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 862 transitions. [2024-11-28 05:27:31,051 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 862 transitions. Word has length 246 [2024-11-28 05:27:31,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:31,052 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 862 transitions. [2024-11-28 05:27:31,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 19 states have call successors, (71), 12 states have call predecessors, (71), 14 states have return successors, (71), 17 states have call predecessors, (71), 19 states have call successors, (71) [2024-11-28 05:27:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 862 transitions. [2024-11-28 05:27:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 05:27:31,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:31,059 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:27:31,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:27:31,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:27:31,264 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:31,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1609584203, now seen corresponding path program 1 times [2024-11-28 05:27:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295866697] [2024-11-28 05:27:31,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1496 trivial. 0 not checked. [2024-11-28 05:27:31,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:27:31,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295866697] [2024-11-28 05:27:31,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295866697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:27:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259398925] [2024-11-28 05:27:31,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:31,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:27:31,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:27:31,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:27:31,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:27:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:32,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:27:32,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:27:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 05:27:32,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:27:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259398925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:27:32,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:27:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-28 05:27:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344291189] [2024-11-28 05:27:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:27:32,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:27:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:27:32,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:27:32,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:27:32,738 INFO L87 Difference]: Start difference. First operand 612 states and 862 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-28 05:27:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:32,854 INFO L93 Difference]: Finished difference Result 1113 states and 1664 transitions. [2024-11-28 05:27:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:27:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 267 [2024-11-28 05:27:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:32,862 INFO L225 Difference]: With dead ends: 1113 [2024-11-28 05:27:32,863 INFO L226 Difference]: Without dead ends: 618 [2024-11-28 05:27:32,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 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 05:27:32,867 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:32,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:27:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-28 05:27:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 616. [2024-11-28 05:27:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 413 states have (on average 1.1912832929782082) internal successors, (492), 412 states have internal predecessors, (492), 142 states have call successors, (142), 44 states have call predecessors, (142), 60 states have return successors, (232), 159 states have call predecessors, (232), 142 states have call successors, (232) [2024-11-28 05:27:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 866 transitions. [2024-11-28 05:27:32,964 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 866 transitions. Word has length 267 [2024-11-28 05:27:32,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:32,965 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 866 transitions. [2024-11-28 05:27:32,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-28 05:27:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 866 transitions. [2024-11-28 05:27:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 05:27:32,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:32,973 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:27:32,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:27:33,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:27:33,174 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:33,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:33,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1277657143, now seen corresponding path program 1 times [2024-11-28 05:27:33,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:33,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445720701] [2024-11-28 05:27:33,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2024-11-28 05:27:36,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:27:36,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445720701] [2024-11-28 05:27:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445720701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:27:36,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:27:36,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:27:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134356434] [2024-11-28 05:27:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:27:36,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:27:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:27:36,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:27:36,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:27:36,456 INFO L87 Difference]: Start difference. First operand 616 states and 866 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 6 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2024-11-28 05:27:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:37,864 INFO L93 Difference]: Finished difference Result 1230 states and 1704 transitions. [2024-11-28 05:27:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:27:37,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 6 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 267 [2024-11-28 05:27:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:37,874 INFO L225 Difference]: With dead ends: 1230 [2024-11-28 05:27:37,874 INFO L226 Difference]: Without dead ends: 713 [2024-11-28 05:27:37,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:27:37,878 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 315 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:37,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 352 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:27:37,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-28 05:27:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 675. [2024-11-28 05:27:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 448 states have (on average 1.1785714285714286) internal successors, (528), 447 states have internal predecessors, (528), 163 states have call successors, (163), 47 states have call predecessors, (163), 63 states have return successors, (255), 180 states have call predecessors, (255), 163 states have call successors, (255) [2024-11-28 05:27:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 946 transitions. [2024-11-28 05:27:38,003 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 946 transitions. Word has length 267 [2024-11-28 05:27:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:38,003 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 946 transitions. [2024-11-28 05:27:38,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 6 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2024-11-28 05:27:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 946 transitions. [2024-11-28 05:27:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-28 05:27:38,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:38,011 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:27:38,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:27:38,012 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:38,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash -198484009, now seen corresponding path program 1 times [2024-11-28 05:27:38,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:38,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49472137] [2024-11-28 05:27:38,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:38,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2024-11-28 05:27:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:27:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49472137] [2024-11-28 05:27:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49472137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:27:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364172696] [2024-11-28 05:27:40,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:40,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:27:40,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:27:40,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:27:40,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:27:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:42,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 05:27:42,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:27:42,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:27:42,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:27:42,633 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 15 treesize of output 7 [2024-11-28 05:27:43,341 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 05:27:43,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:27:43,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 05:27:43,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:27:43,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 05:27:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 548 proven. 22 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2024-11-28 05:27:44,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:27:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 5 proven. 75 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2024-11-28 05:27:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364172696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:27:47,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:27:47,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 16] total 38 [2024-11-28 05:27:47,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194928046] [2024-11-28 05:27:47,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:27:47,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 05:27:47,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:27:47,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 05:27:47,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 05:27:47,703 INFO L87 Difference]: Start difference. First operand 675 states and 946 transitions. Second operand has 38 states, 35 states have (on average 6.6) internal successors, (231), 36 states have internal predecessors, (231), 25 states have call successors, (93), 13 states have call predecessors, (93), 13 states have return successors, (93), 22 states have call predecessors, (93), 25 states have call successors, (93) [2024-11-28 05:27:51,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:55,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:27:59,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:03,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:07,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:09,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:11,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:12,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:17,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:21,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:25,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:29,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:31,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:35,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:39,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:43,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:28:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:54,847 INFO L93 Difference]: Finished difference Result 1407 states and 1901 transitions. [2024-11-28 05:28:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 05:28:54,848 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 6.6) internal successors, (231), 36 states have internal predecessors, (231), 25 states have call successors, (93), 13 states have call predecessors, (93), 13 states have return successors, (93), 22 states have call predecessors, (93), 25 states have call successors, (93) Word has length 317 [2024-11-28 05:28:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:54,855 INFO L225 Difference]: With dead ends: 1407 [2024-11-28 05:28:54,855 INFO L226 Difference]: Without dead ends: 781 [2024-11-28 05:28:54,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 634 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1198, Invalid=4502, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 05:28:54,861 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 913 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 3431 mSolverCounterSat, 760 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 4203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 3431 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:28:54,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1463 Invalid, 4203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 3431 Invalid, 12 Unknown, 0 Unchecked, 63.6s Time] [2024-11-28 05:28:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-11-28 05:28:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 670. [2024-11-28 05:28:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 445 states have (on average 1.146067415730337) internal successors, (510), 446 states have internal predecessors, (510), 153 states have call successors, (153), 55 states have call predecessors, (153), 71 states have return successors, (199), 168 states have call predecessors, (199), 153 states have call successors, (199) [2024-11-28 05:28:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 862 transitions. [2024-11-28 05:28:55,011 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 862 transitions. Word has length 317 [2024-11-28 05:28:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:55,011 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 862 transitions. [2024-11-28 05:28:55,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 6.6) internal successors, (231), 36 states have internal predecessors, (231), 25 states have call successors, (93), 13 states have call predecessors, (93), 13 states have return successors, (93), 22 states have call predecessors, (93), 25 states have call successors, (93) [2024-11-28 05:28:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 862 transitions. [2024-11-28 05:28:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 05:28:55,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:55,017 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:55,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:28:55,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:28:55,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:55,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash 847998837, now seen corresponding path program 1 times [2024-11-28 05:28:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:28:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050382563] [2024-11-28 05:28:55,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:55,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:28:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2024-11-28 05:28:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:28:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050382563] [2024-11-28 05:28:58,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050382563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:28:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987524281] [2024-11-28 05:28:58,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:58,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:58,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:58,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:29:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:01,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 05:29:01,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:03,530 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 05:29:05,286 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 7 treesize of output 3 [2024-11-28 05:29:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 544 proven. 62 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-28 05:29:05,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:07,012 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 20 treesize of output 18 [2024-11-28 05:29:07,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-28 05:29:09,013 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 20 treesize of output 18 [2024-11-28 05:29:09,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-28 05:29:09,400 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 20 treesize of output 18 [2024-11-28 05:29:09,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-28 05:29:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 25 proven. 30 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2024-11-28 05:29:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987524281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:29:11,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:29:11,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 22] total 56 [2024-11-28 05:29:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62745175] [2024-11-28 05:29:11,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:11,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 05:29:11,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:29:11,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 05:29:11,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2698, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 05:29:11,831 INFO L87 Difference]: Start difference. First operand 670 states and 862 transitions. Second operand has 56 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 33 states have call successors, (81), 19 states have call predecessors, (81), 24 states have return successors, (81), 34 states have call predecessors, (81), 33 states have call successors, (81) [2024-11-28 05:29:16,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:22,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:26,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:30,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:31,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:36,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:40,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:44,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:49,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:53,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:29:57,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:02,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:07,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:08,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:12,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:17,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:21,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:25,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:30:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:30:51,931 INFO L93 Difference]: Finished difference Result 1339 states and 1693 transitions. [2024-11-28 05:30:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 05:30:51,932 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 33 states have call successors, (81), 19 states have call predecessors, (81), 24 states have return successors, (81), 34 states have call predecessors, (81), 33 states have call successors, (81) Word has length 267 [2024-11-28 05:30:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:30:51,940 INFO L225 Difference]: With dead ends: 1339 [2024-11-28 05:30:51,940 INFO L226 Difference]: Without dead ends: 944 [2024-11-28 05:30:51,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 515 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=3018, Invalid=15342, Unknown=0, NotChecked=0, Total=18360 [2024-11-28 05:30:51,948 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 2661 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 5441 mSolverCounterSat, 2709 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 8166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2709 IncrementalHoareTripleChecker+Valid, 5441 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:30:51,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 2495 Invalid, 8166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2709 Valid, 5441 Invalid, 16 Unknown, 0 Unchecked, 87.6s Time] [2024-11-28 05:30:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-11-28 05:30:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 714. [2024-11-28 05:30:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 482 states have (on average 1.120331950207469) internal successors, (540), 481 states have internal predecessors, (540), 144 states have call successors, (144), 74 states have call predecessors, (144), 87 states have return successors, (176), 158 states have call predecessors, (176), 144 states have call successors, (176) [2024-11-28 05:30:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 860 transitions. [2024-11-28 05:30:52,142 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 860 transitions. Word has length 267 [2024-11-28 05:30:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:30:52,143 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 860 transitions. [2024-11-28 05:30:52,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 33 states have call successors, (81), 19 states have call predecessors, (81), 24 states have return successors, (81), 34 states have call predecessors, (81), 33 states have call successors, (81) [2024-11-28 05:30:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 860 transitions. [2024-11-28 05:30:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-28 05:30:52,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:30:52,148 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 9, 9, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:30:52,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:30:52,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:30:52,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:30:52,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:30:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1714363831, now seen corresponding path program 1 times [2024-11-28 05:30:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:30:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950909932] [2024-11-28 05:30:52,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:52,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:30:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:31:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 65 proven. 351 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2024-11-28 05:31:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:31:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950909932] [2024-11-28 05:31:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950909932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:31:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447085007] [2024-11-28 05:31:23,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:31:23,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:31:23,820 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:31:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7d8f8c6-e190-4215-abda-03020212c94b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:32:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:32:55,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 250 conjuncts are in the unsatisfiable core [2024-11-28 05:32:55,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:32:59,065 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 15 treesize of output 1 [2024-11-28 05:32:59,449 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 19 treesize of output 1 [2024-11-28 05:32:59,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2024-11-28 05:32:59,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:33:00,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:33:00,704 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 15 treesize of output 7 [2024-11-28 05:33:00,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:33:00,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 32 [2024-11-28 05:33:00,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-28 05:33:04,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:33:06,143 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 17 treesize of output 13 [2024-11-28 05:33:06,180 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 05:33:10,470 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:33:10,471 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 42 treesize of output 26 [2024-11-28 05:33:10,492 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 18 treesize of output 16 [2024-11-28 05:33:10,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 12 [2024-11-28 05:33:11,410 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 05:33:12,229 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-28 05:33:12,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 110 [2024-11-28 05:33:12,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2024-11-28 05:33:13,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 62 [2024-11-28 05:33:13,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:33:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:33:13,735 INFO L349 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2024-11-28 05:33:13,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 70 [2024-11-28 05:33:13,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:33:13,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 05:33:34,917 WARN L286 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 120 DAG size of output: 116 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:33:35,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:33:35,466 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 272 treesize of output 260 [2024-11-28 05:33:38,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:33:38,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2024-11-28 05:33:39,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2024-11-28 05:33:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:33:39,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:33:39,147 INFO L349 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2024-11-28 05:33:39,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 66 [2024-11-28 05:34:09,389 WARN L286 SmtUtils]: Spent 10.84s on a formula simplification. DAG size of input: 161 DAG size of output: 159 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:34:10,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:34:10,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2024-11-28 05:34:10,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2024-11-28 05:34:10,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:34:10,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:34:10,538 INFO L349 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2024-11-28 05:34:10,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 66 [2024-11-28 05:34:41,998 WARN L286 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 180 DAG size of output: 178 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:34:44,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:34:44,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-11-28 05:34:44,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 81 [2024-11-28 05:34:44,830 INFO L349 Elim1Store]: treesize reduction 40, result has 57.4 percent of original size [2024-11-28 05:34:44,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 83 treesize of output 144 [2024-11-28 05:34:55,410 INFO L349 Elim1Store]: treesize reduction 1324, result has 2.2 percent of original size [2024-11-28 05:34:55,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 28 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 234 case distinctions, treesize of input 765 treesize of output 827 [2024-11-28 05:35:15,426 WARN L286 SmtUtils]: Spent 13.22s on a formula simplification. DAG size of input: 673 DAG size of output: 621 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:35:15,426 INFO L349 Elim1Store]: treesize reduction 116, result has 92.0 percent of original size [2024-11-28 05:35:15,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 23 select indices, 23 select index equivalence classes, 19 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 792 treesize of output 1925 [2024-11-28 05:35:15,767 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 593 treesize of output 541 [2024-11-28 05:35:33,439 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-28 05:35:56,707 WARN L286 SmtUtils]: Spent 23.22s on a formula simplification. DAG size of input: 390 DAG size of output: 390 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:38:14,273 WARN L672 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2024-11-28 05:38:41,063 WARN L286 SmtUtils]: Spent 26.69s on a formula simplification. DAG size of input: 406 DAG size of output: 391 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)