./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:58:50,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:58:50,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:58:50,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:58:50,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:58:50,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:58:50,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:58:50,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:58:50,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:58:50,379 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:58:50,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:58:50,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:58:50,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:58:50,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:58:50,382 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:58:50,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:58:50,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:58:50,382 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:58:50,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:58:50,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:58:50,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:58:50,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:58:50,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:58:50,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:58:50,385 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_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 [2024-11-13 14:58:50,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:58:50,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:58:50,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:58:50,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:58:50,734 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:58:50,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c Unable to find full path for "g++" [2024-11-13 14:58:52,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:58:52,946 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:58:52,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-11-13 14:58:52,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/data/4736b6208/39d2be5e9ea24b6dbc3e7ec98a93974f/FLAG4fa69fb5c [2024-11-13 14:58:52,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/data/4736b6208/39d2be5e9ea24b6dbc3e7ec98a93974f [2024-11-13 14:58:53,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:58:53,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:58:53,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:58:53,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:58:53,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:58:53,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:58:52" (1/1) ... [2024-11-13 14:58:53,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebdbc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53, skipping insertion in model container [2024-11-13 14:58:53,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:58:52" (1/1) ... [2024-11-13 14:58:53,045 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:58:53,231 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_39e6368f-d8b5-485f-a5b4-2de8137e92c7/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c[1037,1050] [2024-11-13 14:58:53,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:58:53,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:58:53,305 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_39e6368f-d8b5-485f-a5b4-2de8137e92c7/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c[1037,1050] [2024-11-13 14:58:53,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:58:53,343 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:58:53,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53 WrapperNode [2024-11-13 14:58:53,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:58:53,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:58:53,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:58:53,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:58:53,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,391 INFO L138 Inliner]: procedures = 17, calls = 141, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 137 [2024-11-13 14:58:53,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:58:53,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:58:53,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:58:53,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:58:53,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,442 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [5, 2, 8, 5, 8, 7, 7, 10, 7, 9, 12, 3, 3]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [2, 0, 2, 2, 2, 3, 2, 2, 3, 1, 1, 1, 1]. [2024-11-13 14:58:53,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:58:53,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:58:53,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:58:53,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:58:53,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (1/1) ... [2024-11-13 14:58:53,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:58:53,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:58:53,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:58:53,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:58:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:58:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 14:58:53,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 14:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-13 14:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 14:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 14:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 14:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-13 14:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-13 14:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-13 14:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-13 14:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2024-11-13 14:58:53,570 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2024-11-13 14:58:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2024-11-13 14:58:53,570 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2024-11-13 14:58:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:58:53,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:58:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:58:53,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:58:53,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 14:58:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-13 14:58:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-13 14:58:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-13 14:58:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-13 14:58:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:58:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:58:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:58:53,817 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:58:53,819 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:58:54,240 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 14:58:54,240 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:58:54,251 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:58:54,252 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:58:54,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:58:54 BoogieIcfgContainer [2024-11-13 14:58:54,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:58:54,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:58:54,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:58:54,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:58:54,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:58:52" (1/3) ... [2024-11-13 14:58:54,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58acf5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:58:54, skipping insertion in model container [2024-11-13 14:58:54,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:58:53" (2/3) ... [2024-11-13 14:58:54,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58acf5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:58:54, skipping insertion in model container [2024-11-13 14:58:54,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:58:54" (3/3) ... [2024-11-13 14:58:54,264 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2024-11-13 14:58:54,283 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:58:54,284 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd2-ll.c that has 5 procedures, 51 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 14:58:54,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:58:54,360 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;@290be549, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:58:54,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:58:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-13 14:58:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:58:54,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:58:54,375 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:58:54,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:58:54,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:58:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1681658183, now seen corresponding path program 1 times [2024-11-13 14:58:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:58:54,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595712736] [2024-11-13 14:58:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:58:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:58:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:54,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:58:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:54,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:58:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:54,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:58:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:54,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:58:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:58:54,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:58:54,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595712736] [2024-11-13 14:58:54,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595712736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:58:54,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:58:54,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:58:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33529313] [2024-11-13 14:58:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:58:54,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:58:54,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:58:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:58:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:58:54,867 INFO L87 Difference]: Start difference. First operand has 51 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:58:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:58:54,916 INFO L93 Difference]: Finished difference Result 99 states and 142 transitions. [2024-11-13 14:58:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:58:54,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-11-13 14:58:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:58:54,925 INFO L225 Difference]: With dead ends: 99 [2024-11-13 14:58:54,925 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 14:58:54,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:58:54,933 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:58:54,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:58:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 14:58:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-13 14:58:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 31 states have internal predecessors, (31), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 14:58:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-11-13 14:58:54,989 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 37 [2024-11-13 14:58:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:58:54,991 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-11-13 14:58:54,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:58:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-11-13 14:58:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:58:54,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:58:54,995 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:58:54,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:58:54,996 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:58:54,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:58:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1619629489, now seen corresponding path program 1 times [2024-11-13 14:58:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:58:54,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801579297] [2024-11-13 14:58:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:58:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:58:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:58:55,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215344697] [2024-11-13 14:58:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:58:55,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:58:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:58:55,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:58:55,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:58:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:55,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-13 14:58:55,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:58:55,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:58:55,710 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 [2024-11-13 14:58:55,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:58:55,723 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 [2024-11-13 14:58:55,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:58:55,942 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 19 treesize of output 11 [2024-11-13 14:58:55,952 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 11 [2024-11-13 14:58:56,127 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 [2024-11-13 14:58:56,141 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 19 treesize of output 11 [2024-11-13 14:58:56,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:58:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:58:56,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:58:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:58:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801579297] [2024-11-13 14:58:56,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:58:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215344697] [2024-11-13 14:58:56,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215344697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:58:56,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:58:56,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 14:58:56,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766987312] [2024-11-13 14:58:56,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:58:56,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:58:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:58:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:58:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:58:56,235 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:58:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:58:56,964 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2024-11-13 14:58:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:58:56,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-11-13 14:58:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:58:56,972 INFO L225 Difference]: With dead ends: 96 [2024-11-13 14:58:56,972 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 14:58:56,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:58:56,975 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 42 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:58:56,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 405 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:58:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 14:58:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2024-11-13 14:58:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 56 states have internal predecessors, (59), 21 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (25), 21 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-13 14:58:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2024-11-13 14:58:57,017 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 37 [2024-11-13 14:58:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:58:57,021 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2024-11-13 14:58:57,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:58:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2024-11-13 14:58:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:58:57,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:58:57,023 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:58:57,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:58:57,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 14:58:57,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:58:57,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:58:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 509898258, now seen corresponding path program 1 times [2024-11-13 14:58:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:58:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788238882] [2024-11-13 14:58:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:58:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:58:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:58:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:58:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:58:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:58:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:58:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:58:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:58:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788238882] [2024-11-13 14:58:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788238882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:58:58,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700563249] [2024-11-13 14:58:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:58:58,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:58:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:58:58,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:58:58,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:58:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:58:58,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 14:58:58,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:58:58,622 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 19 treesize of output 11 [2024-11-13 14:58:58,632 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 [2024-11-13 14:58:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:58:58,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:58:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:58:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700563249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:58:59,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:58:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2024-11-13 14:58:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370933685] [2024-11-13 14:58:59,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:58:59,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:58:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:58:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:58:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:58:59,559 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand has 25 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-13 14:59:05,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:59:09,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:59:13,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:59:17,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:59:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:59:17,962 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2024-11-13 14:59:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:59:17,963 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 37 [2024-11-13 14:59:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:59:17,965 INFO L225 Difference]: With dead ends: 150 [2024-11-13 14:59:17,965 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 14:59:17,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:59:17,968 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 121 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:59:17,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 157 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 779 Invalid, 5 Unknown, 0 Unchecked, 17.5s Time] [2024-11-13 14:59:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 14:59:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2024-11-13 14:59:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 84 states have (on average 1.119047619047619) internal successors, (94), 88 states have internal predecessors, (94), 31 states have call successors, (31), 15 states have call predecessors, (31), 18 states have return successors, (38), 30 states have call predecessors, (38), 29 states have call successors, (38) [2024-11-13 14:59:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2024-11-13 14:59:18,008 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 37 [2024-11-13 14:59:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:59:18,008 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2024-11-13 14:59:18,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-13 14:59:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2024-11-13 14:59:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:59:18,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:59:18,010 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:59:18,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:59:18,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:18,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:59:18,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -257668564, now seen corresponding path program 1 times [2024-11-13 14:59:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035023734] [2024-11-13 14:59:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:59:18,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412085449] [2024-11-13 14:59:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:18,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:18,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:18,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:18,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:59:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:18,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-11-13 14:59:18,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:18,618 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 [2024-11-13 14:59:18,623 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 [2024-11-13 14:59:18,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:18,858 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 11 [2024-11-13 14:59:18,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:18,882 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 11 [2024-11-13 14:59:20,039 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 11 treesize of output 7 [2024-11-13 14:59:21,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:59:21,140 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 19 treesize of output 11 [2024-11-13 14:59:21,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:59:21,162 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 29 treesize of output 25 [2024-11-13 14:59:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:59:21,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:59:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035023734] [2024-11-13 14:59:21,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:59:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412085449] [2024-11-13 14:59:21,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412085449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:21,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:59:21,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-13 14:59:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389678179] [2024-11-13 14:59:21,651 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:59:21,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:59:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:59:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:59:21,654 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 16 states have internal predecessors, (27), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:59:25,673 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] [2024-11-13 14:59:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:59:28,047 INFO L93 Difference]: Finished difference Result 152 states and 178 transitions. [2024-11-13 14:59:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:59:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 16 states have internal predecessors, (27), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-11-13 14:59:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:59:28,050 INFO L225 Difference]: With dead ends: 152 [2024-11-13 14:59:28,050 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 14:59:28,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:59:28,056 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 91 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:59:28,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 341 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 586 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2024-11-13 14:59:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 14:59:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2024-11-13 14:59:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.10752688172043) internal successors, (103), 97 states have internal predecessors, (103), 31 states have call successors, (31), 18 states have call predecessors, (31), 21 states have return successors, (38), 30 states have call predecessors, (38), 29 states have call successors, (38) [2024-11-13 14:59:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2024-11-13 14:59:28,126 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 43 [2024-11-13 14:59:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:59:28,127 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2024-11-13 14:59:28,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 16 states have internal predecessors, (27), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:59:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2024-11-13 14:59:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:59:28,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:59:28,131 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-13 14:59:28,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:59:28,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:28,332 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:59:28,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 670488903, now seen corresponding path program 1 times [2024-11-13 14:59:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:28,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223759967] [2024-11-13 14:59:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:28,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:59:28,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798761694] [2024-11-13 14:59:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:28,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:28,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:28,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:28,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:59:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:28,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-13 14:59:28,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:28,684 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 [2024-11-13 14:59:28,709 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 11 [2024-11-13 14:59:28,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:28,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:29,296 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 19 treesize of output 11 [2024-11-13 14:59:29,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:59:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:59:29,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:59:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223759967] [2024-11-13 14:59:29,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:59:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798761694] [2024-11-13 14:59:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798761694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:29,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:59:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-13 14:59:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600314881] [2024-11-13 14:59:29,510 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:59:29,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:59:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:59:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:59:29,511 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:59:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:59:30,190 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2024-11-13 14:59:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:59:30,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2024-11-13 14:59:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:59:30,193 INFO L225 Difference]: With dead ends: 160 [2024-11-13 14:59:30,193 INFO L226 Difference]: Without dead ends: 158 [2024-11-13 14:59:30,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 9 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:59:30,195 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 30 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:59:30,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 262 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:59:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-13 14:59:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2024-11-13 14:59:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 99 states have (on average 1.101010101010101) internal successors, (109), 103 states have internal predecessors, (109), 31 states have call successors, (31), 20 states have call predecessors, (31), 23 states have return successors, (38), 30 states have call predecessors, (38), 29 states have call successors, (38) [2024-11-13 14:59:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2024-11-13 14:59:30,250 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 49 [2024-11-13 14:59:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:59:30,251 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2024-11-13 14:59:30,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:59:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2024-11-13 14:59:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:59:30,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:59:30,253 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2024-11-13 14:59:30,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:59:30,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:30,453 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:59:30,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1286680864, now seen corresponding path program 1 times [2024-11-13 14:59:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033039158] [2024-11-13 14:59:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:59:30,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511983422] [2024-11-13 14:59:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:30,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:30,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:30,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:30,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:59:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:30,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-11-13 14:59:30,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:30,870 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 [2024-11-13 14:59:30,876 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 [2024-11-13 14:59:31,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:31,041 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 21 treesize of output 17 [2024-11-13 14:59:31,052 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 21 treesize of output 17 [2024-11-13 14:59:31,070 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 11 [2024-11-13 14:59:31,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:38,482 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 67 treesize of output 39 [2024-11-13 14:59:38,491 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 22 treesize of output 10 [2024-11-13 14:59:38,504 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 17 treesize of output 9 [2024-11-13 14:59:38,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:59:38,529 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 35 treesize of output 31 [2024-11-13 14:59:38,537 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 17 treesize of output 9 [2024-11-13 14:59:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:59:38,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:59:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:59:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033039158] [2024-11-13 14:59:39,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:59:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511983422] [2024-11-13 14:59:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511983422] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:39,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:59:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 26 [2024-11-13 14:59:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581838119] [2024-11-13 14:59:39,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:39,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:59:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:59:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:59:39,926 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:59:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:59:43,791 INFO L93 Difference]: Finished difference Result 162 states and 185 transitions. [2024-11-13 14:59:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:59:43,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2024-11-13 14:59:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:59:43,794 INFO L225 Difference]: With dead ends: 162 [2024-11-13 14:59:43,794 INFO L226 Difference]: Without dead ends: 160 [2024-11-13 14:59:43,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 73 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:59:43,797 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:59:43,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 302 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 14:59:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-13 14:59:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-11-13 14:59:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 102 states have (on average 1.088235294117647) internal successors, (111), 106 states have internal predecessors, (111), 31 states have call successors, (31), 21 states have call predecessors, (31), 24 states have return successors, (38), 30 states have call predecessors, (38), 29 states have call successors, (38) [2024-11-13 14:59:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 180 transitions. [2024-11-13 14:59:43,856 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 180 transitions. Word has length 55 [2024-11-13 14:59:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:59:43,856 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 180 transitions. [2024-11-13 14:59:43,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:59:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 180 transitions. [2024-11-13 14:59:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:59:43,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:59:43,859 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:59:43,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:59:44,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:44,060 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:59:44,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1519499309, now seen corresponding path program 1 times [2024-11-13 14:59:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252123246] [2024-11-13 14:59:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:59:44,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401173172] [2024-11-13 14:59:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:44,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:44,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:44,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:44,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:59:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:44,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 14:59:44,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:44,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:59:44,514 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 [2024-11-13 14:59:44,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:59:44,519 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 [2024-11-13 14:59:44,526 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 11 [2024-11-13 14:59:44,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:59:44,924 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 19 treesize of output 11 [2024-11-13 14:59:44,931 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 35 treesize of output 21 [2024-11-13 14:59:45,006 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 17 [2024-11-13 14:59:45,012 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 21 treesize of output 13 [2024-11-13 14:59:45,016 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 17 treesize of output 9 [2024-11-13 14:59:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-13 14:59:45,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:59:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 14:59:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:45,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252123246] [2024-11-13 14:59:45,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:59:45,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401173172] [2024-11-13 14:59:45,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401173172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:59:45,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:59:45,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-11-13 14:59:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080619899] [2024-11-13 14:59:45,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:59:45,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:59:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:59:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:59:45,406 INFO L87 Difference]: Start difference. First operand 158 states and 180 transitions. Second operand has 15 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 8 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 14:59:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:59:46,267 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2024-11-13 14:59:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:59:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 8 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 65 [2024-11-13 14:59:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:59:46,272 INFO L225 Difference]: With dead ends: 206 [2024-11-13 14:59:46,274 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 14:59:46,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:59:46,276 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 63 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:59:46,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 437 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:59:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 14:59:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2024-11-13 14:59:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 128 states have (on average 1.0859375) internal successors, (139), 134 states have internal predecessors, (139), 41 states have call successors, (41), 25 states have call predecessors, (41), 32 states have return successors, (56), 42 states have call predecessors, (56), 39 states have call successors, (56) [2024-11-13 14:59:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 236 transitions. [2024-11-13 14:59:46,347 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 236 transitions. Word has length 65 [2024-11-13 14:59:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:59:46,348 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 236 transitions. [2024-11-13 14:59:46,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 8 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 14:59:46,348 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 236 transitions. [2024-11-13 14:59:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:59:46,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:59:46,350 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2024-11-13 14:59:46,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:59:46,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:46,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:59:46,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash 49318782, now seen corresponding path program 1 times [2024-11-13 14:59:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922246202] [2024-11-13 14:59:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:59:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:59:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:59:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:59:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:59:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 14:59:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:59:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:59:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:59:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:59:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 14:59:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 14:59:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922246202] [2024-11-13 14:59:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922246202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869618523] [2024-11-13 14:59:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:48,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:48,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:48,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:48,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:59:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:48,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 14:59:48,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:48,724 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 23 treesize of output 15 [2024-11-13 14:59:48,728 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 [2024-11-13 14:59:49,092 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 [2024-11-13 14:59:49,188 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 23 treesize of output 15 [2024-11-13 14:59:49,194 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 [2024-11-13 14:59:49,348 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 19 treesize of output 11 [2024-11-13 14:59:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:59:49,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:59:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869618523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:50,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:59:50,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 29 [2024-11-13 14:59:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60170770] [2024-11-13 14:59:50,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:59:50,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:59:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:59:50,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:59:50,380 INFO L87 Difference]: Start difference. First operand 202 states and 236 transitions. Second operand has 29 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 12 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-13 14:59:54,420 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 [0] [2024-11-13 15:00:00,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:00:04,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:00:08,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:00:12,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:00:17,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:00:21,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:00:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:21,187 INFO L93 Difference]: Finished difference Result 216 states and 252 transitions. [2024-11-13 15:00:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 15:00:21,188 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 12 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 74 [2024-11-13 15:00:21,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:21,190 INFO L225 Difference]: With dead ends: 216 [2024-11-13 15:00:21,190 INFO L226 Difference]: Without dead ends: 206 [2024-11-13 15:00:21,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=437, Invalid=3103, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 15:00:21,191 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 146 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 124 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:21,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 154 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1030 Invalid, 7 Unknown, 0 Unchecked, 29.4s Time] [2024-11-13 15:00:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-13 15:00:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2024-11-13 15:00:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 135 states have internal predecessors, (140), 41 states have call successors, (41), 25 states have call predecessors, (41), 33 states have return successors, (58), 43 states have call predecessors, (58), 39 states have call successors, (58) [2024-11-13 15:00:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 239 transitions. [2024-11-13 15:00:21,262 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 239 transitions. Word has length 74 [2024-11-13 15:00:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:21,263 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 239 transitions. [2024-11-13 15:00:21,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 12 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-13 15:00:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 239 transitions. [2024-11-13 15:00:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 15:00:21,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:21,265 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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] [2024-11-13 15:00:21,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:00:21,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:21,469 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:00:21,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:21,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1950907224, now seen corresponding path program 1 times [2024-11-13 15:00:21,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:21,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620872128] [2024-11-13 15:00:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:00:21,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939316088] [2024-11-13 15:00:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:21,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:21,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:21,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:21,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:00:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:21,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 227 conjuncts are in the unsatisfiable core [2024-11-13 15:00:21,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:21,925 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 [2024-11-13 15:00:21,928 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 [2024-11-13 15:00:21,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:21,939 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 11 [2024-11-13 15:00:21,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:21,955 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 11 [2024-11-13 15:00:22,326 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 11 [2024-11-13 15:00:22,374 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 11 treesize of output 7 [2024-11-13 15:00:23,171 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 27 treesize of output 19 [2024-11-13 15:00:23,175 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 38 treesize of output 26 [2024-11-13 15:00:23,179 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 11 treesize of output 7 [2024-11-13 15:00:23,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:23,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:23,512 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 [2024-11-13 15:00:23,517 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 19 treesize of output 11 [2024-11-13 15:00:23,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:00:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 15:00:23,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:00:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-13 15:00:24,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620872128] [2024-11-13 15:00:24,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:00:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939316088] [2024-11-13 15:00:24,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939316088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:00:24,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:00:24,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 25 [2024-11-13 15:00:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245389589] [2024-11-13 15:00:24,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:00:24,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:00:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:00:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:00:24,434 INFO L87 Difference]: Start difference. First operand 204 states and 239 transitions. Second operand has 25 states, 23 states have (on average 2.739130434782609) internal successors, (63), 18 states have internal predecessors, (63), 13 states have call successors, (26), 11 states have call predecessors, (26), 4 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-13 15:00:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:26,562 INFO L93 Difference]: Finished difference Result 304 states and 361 transitions. [2024-11-13 15:00:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:00:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.739130434782609) internal successors, (63), 18 states have internal predecessors, (63), 13 states have call successors, (26), 11 states have call predecessors, (26), 4 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 78 [2024-11-13 15:00:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:26,565 INFO L225 Difference]: With dead ends: 304 [2024-11-13 15:00:26,565 INFO L226 Difference]: Without dead ends: 298 [2024-11-13 15:00:26,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 117 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:00:26,567 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 81 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:26,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 396 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 15:00:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-13 15:00:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2024-11-13 15:00:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 186 states have (on average 1.0913978494623655) internal successors, (203), 194 states have internal predecessors, (203), 60 states have call successors, (60), 36 states have call predecessors, (60), 47 states have return successors, (88), 63 states have call predecessors, (88), 57 states have call successors, (88) [2024-11-13 15:00:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 351 transitions. [2024-11-13 15:00:26,655 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 351 transitions. Word has length 78 [2024-11-13 15:00:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:26,656 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 351 transitions. [2024-11-13 15:00:26,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.739130434782609) internal successors, (63), 18 states have internal predecessors, (63), 13 states have call successors, (26), 11 states have call predecessors, (26), 4 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-13 15:00:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 351 transitions. [2024-11-13 15:00:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 15:00:26,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:26,657 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 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] [2024-11-13 15:00:26,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:00:26,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:26,861 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:00:26,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1987806861, now seen corresponding path program 2 times [2024-11-13 15:00:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197908049] [2024-11-13 15:00:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:26,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:00:26,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240006320] [2024-11-13 15:00:26,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:00:26,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:26,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:26,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:00:27,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:00:27,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:27,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 242 conjuncts are in the unsatisfiable core [2024-11-13 15:00:27,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:27,671 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 [2024-11-13 15:00:27,734 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 11 [2024-11-13 15:00:27,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:27,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:27,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:28,306 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 27 treesize of output 19 [2024-11-13 15:00:28,312 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 11 [2024-11-13 15:00:28,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:28,465 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 11 treesize of output 7 [2024-11-13 15:00:29,032 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 [2024-11-13 15:00:29,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:29,043 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 27 treesize of output 19 [2024-11-13 15:00:29,049 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 11 [2024-11-13 15:00:29,056 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 19 treesize of output 11 [2024-11-13 15:00:29,063 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 [2024-11-13 15:00:29,895 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 19 treesize of output 11 [2024-11-13 15:00:29,899 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 22 treesize of output 10 [2024-11-13 15:00:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 64 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 15:00:30,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:00:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197908049] [2024-11-13 15:00:30,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:00:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240006320] [2024-11-13 15:00:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240006320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:00:30,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:00:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-11-13 15:00:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999578726] [2024-11-13 15:00:30,276 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 15:00:30,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:00:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:00:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:00:30,278 INFO L87 Difference]: Start difference. First operand 294 states and 351 transitions. Second operand has 25 states, 23 states have (on average 2.0) internal successors, (46), 21 states have internal predecessors, (46), 8 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-13 15:00:34,333 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] [2024-11-13 15:00:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:36,797 INFO L93 Difference]: Finished difference Result 380 states and 449 transitions. [2024-11-13 15:00:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 15:00:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0) internal successors, (46), 21 states have internal predecessors, (46), 8 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 84 [2024-11-13 15:00:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:36,801 INFO L225 Difference]: With dead ends: 380 [2024-11-13 15:00:36,801 INFO L226 Difference]: Without dead ends: 378 [2024-11-13 15:00:36,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=205, Invalid=1601, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 15:00:36,804 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 98 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:36,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 371 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 949 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2024-11-13 15:00:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-13 15:00:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2024-11-13 15:00:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 237 states have (on average 1.0928270042194093) internal successors, (259), 248 states have internal predecessors, (259), 75 states have call successors, (75), 47 states have call predecessors, (75), 61 states have return successors, (109), 78 states have call predecessors, (109), 72 states have call successors, (109) [2024-11-13 15:00:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 443 transitions. [2024-11-13 15:00:36,919 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 443 transitions. Word has length 84 [2024-11-13 15:00:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:36,919 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 443 transitions. [2024-11-13 15:00:36,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0) internal successors, (46), 21 states have internal predecessors, (46), 8 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-13 15:00:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 443 transitions. [2024-11-13 15:00:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 15:00:36,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:36,921 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 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] [2024-11-13 15:00:36,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:00:37,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:00:37,122 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:00:37,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1927741364, now seen corresponding path program 3 times [2024-11-13 15:00:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472720006] [2024-11-13 15:00:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:37,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:00:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749631671] [2024-11-13 15:00:37,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:00:37,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:37,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:37,211 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:37,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39e6368f-d8b5-485f-a5b4-2de8137e92c7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:00:37,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:00:37,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:37,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 309 conjuncts are in the unsatisfiable core [2024-11-13 15:00:37,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:38,025 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 [2024-11-13 15:00:38,040 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 343006 treesize of output 338910 [2024-11-13 15:00:38,239 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 [2024-11-13 15:00:38,458 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 21 treesize of output 17 [2024-11-13 15:00:38,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:38,497 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 11 treesize of output 7 [2024-11-13 15:00:38,521 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 11 [2024-11-13 15:00:38,541 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 15 treesize of output 11 [2024-11-13 15:00:38,566 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 11 treesize of output 7 [2024-11-13 15:00:38,583 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 11 treesize of output 7 [2024-11-13 15:00:54,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:54,078 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 38 treesize of output 34 [2024-11-13 15:00:54,094 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 11 [2024-11-13 15:00:54,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:58,528 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 11 treesize of output 7 [2024-11-13 15:01:35,063 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 15:01:35,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2024-11-13 15:01:35,118 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-13 15:01:35,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 45 [2024-11-13 15:01:35,170 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-13 15:01:35,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 25 [2024-11-13 15:01:35,222 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-13 15:01:35,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 25 [2024-11-13 15:01:35,251 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 15:01:35,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2024-11-13 15:01:35,737 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 23 treesize of output 15 [2024-11-13 15:03:17,713 WARN L286 SmtUtils]: Spent 18.95s on a formula simplification that was a NOOP. DAG size: 1569 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:03:17,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:17,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 28 select indices, 28 select index equivalence classes, 0 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 378 case distinctions, treesize of input 1290 treesize of output 4158 [2024-11-13 15:03:43,973 WARN L286 SmtUtils]: Spent 25.40s on a formula simplification that was a NOOP. DAG size: 1569 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:03:43,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:43,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 28 select indices, 28 select index equivalence classes, 0 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 378 case distinctions, treesize of input 1131 treesize of output 3895 [2024-11-13 15:04:44,215 WARN L286 SmtUtils]: Spent 58.03s on a formula simplification that was a NOOP. DAG size: 1569 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:04:44,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:44,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 28 select indices, 28 select index equivalence classes, 0 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 378 case distinctions, treesize of input 875 treesize of output 3783 [2024-11-13 15:05:05,104 WARN L286 SmtUtils]: Spent 13.49s on a formula simplification that was a NOOP. DAG size: 969 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:05:05,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:05,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 2 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 758 treesize of output 2518 [2024-11-13 15:05:10,840 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 6013 DAG size of output: 6004 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:05:34,589 WARN L286 SmtUtils]: Spent 20.43s on a formula simplification that was a NOOP. DAG size: 969 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:05:34,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:34,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 1 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 688 treesize of output 2440 [2024-11-13 15:05:53,626 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 289 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:05:53,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:53,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 590 treesize of output 1070 [2024-11-13 15:06:02,863 WARN L286 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 7136 DAG size of output: 7127 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)