./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:55,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:55,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:07:55,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:55,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:55,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:55,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:55,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:55,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:55,542 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:55,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:55,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:55,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:55,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:55,543 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:55,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:55,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:55,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:55,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:55,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:55,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:55,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:55,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:55,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:55,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:55,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:55,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:55,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:55,545 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:55,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:55,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:55,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:55,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:55,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:55,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:55,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:55,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:55,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:55,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:55,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:55,547 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:55,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:55,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:55,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:55,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:55,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:55,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:55,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:55,548 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_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 [2024-11-28 02:07:55,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:55,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:55,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:55,916 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:55,916 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:55,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2024-11-28 02:07:59,133 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/data/e4efa3aa2/50ded07469ed403eb47422fe74df586b/FLAGb7466c811 [2024-11-28 02:07:59,443 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:59,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2024-11-28 02:07:59,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/data/e4efa3aa2/50ded07469ed403eb47422fe74df586b/FLAGb7466c811 [2024-11-28 02:07:59,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/data/e4efa3aa2/50ded07469ed403eb47422fe74df586b [2024-11-28 02:07:59,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:59,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:59,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:59,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:59,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:59,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244d9f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59, skipping insertion in model container [2024-11-28 02:07:59,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:59,692 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_711e2d4f-c044-4201-b2f9-a797d493533b/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c[415,428] [2024-11-28 02:07:59,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:59,732 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:59,747 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_711e2d4f-c044-4201-b2f9-a797d493533b/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c[415,428] [2024-11-28 02:07:59,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:59,781 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:59,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59 WrapperNode [2024-11-28 02:07:59,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:59,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:59,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:59,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:59,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,825 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-28 02:07:59,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:59,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:59,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:59,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:59,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,850 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-28 02:07:59,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,857 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:59,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:59,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:59,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:59,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (1/1) ... [2024-11-28 02:07:59,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:59,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:59,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:07:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:07:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:07:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:07:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:07:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:07:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:07:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:07:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:07:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:07:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:07:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:07:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:07:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:08:00,044 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:08:00,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:08:00,241 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-28 02:08:00,241 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:08:00,253 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:08:00,253 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:08:00,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:08:00 BoogieIcfgContainer [2024-11-28 02:08:00,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:08:00,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:08:00,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:08:00,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:08:00,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:59" (1/3) ... [2024-11-28 02:08:00,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5541224b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:08:00, skipping insertion in model container [2024-11-28 02:08:00,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:59" (2/3) ... [2024-11-28 02:08:00,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5541224b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:08:00, skipping insertion in model container [2024-11-28 02:08:00,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:08:00" (3/3) ... [2024-11-28 02:08:00,267 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2024-11-28 02:08:00,285 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:08:00,286 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_pair_symmetr2.c that has 2 procedures, 26 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 02:08:00,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:08:00,361 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;@62999313, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:08:00,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:08:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:08:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:08:00,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:00,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:00,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:00,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1488265721, now seen corresponding path program 1 times [2024-11-28 02:08:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366188443] [2024-11-28 02:08:00,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:00,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:00,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366188443] [2024-11-28 02:08:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366188443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449628890] [2024-11-28 02:08:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:00,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:00,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:00,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:00,721 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:00,880 INFO L93 Difference]: Finished difference Result 58 states and 89 transitions. [2024-11-28 02:08:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 02:08:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:00,888 INFO L225 Difference]: With dead ends: 58 [2024-11-28 02:08:00,888 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 02:08:00,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:00,896 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:00,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:08:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 02:08:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-11-28 02:08:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:08:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-28 02:08:00,940 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2024-11-28 02:08:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:00,941 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-28 02:08:00,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-28 02:08:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:08:00,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:00,943 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:00,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:08:00,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:00,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1767899862, now seen corresponding path program 1 times [2024-11-28 02:08:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797959664] [2024-11-28 02:08:00,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:08:01,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797959664] [2024-11-28 02:08:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797959664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323386089] [2024-11-28 02:08:01,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:01,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:01,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:01,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:08:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:01,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:08:01,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:08:01,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:08:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323386089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:01,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:01,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2024-11-28 02:08:01,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259168854] [2024-11-28 02:08:01,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:01,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:08:01,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:01,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:08:01,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:08:01,716 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:08:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:01,990 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2024-11-28 02:08:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:08:01,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 30 [2024-11-28 02:08:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:01,992 INFO L225 Difference]: With dead ends: 72 [2024-11-28 02:08:01,992 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 02:08:01,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:08:01,993 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:01,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 42 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:08:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 02:08:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2024-11-28 02:08:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:08:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2024-11-28 02:08:02,010 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 30 [2024-11-28 02:08:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:02,010 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2024-11-28 02:08:02,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:08:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2024-11-28 02:08:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:08:02,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:02,013 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:02,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:08:02,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:02,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:02,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1268648509, now seen corresponding path program 2 times [2024-11-28 02:08:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:02,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328043390] [2024-11-28 02:08:02,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:02,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:02,332 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:02,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-28 02:08:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:02,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328043390] [2024-11-28 02:08:02,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328043390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:02,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287329983] [2024-11-28 02:08:02,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:02,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:02,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:02,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:02,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:08:02,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:02,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:02,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:08:02,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-28 02:08:03,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-28 02:08:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287329983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:03,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:03,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-11-28 02:08:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745333696] [2024-11-28 02:08:03,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:03,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:08:03,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:03,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:08:03,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:08:03,532 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-28 02:08:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:04,063 INFO L93 Difference]: Finished difference Result 162 states and 206 transitions. [2024-11-28 02:08:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:08:04,064 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 90 [2024-11-28 02:08:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:04,067 INFO L225 Difference]: With dead ends: 162 [2024-11-28 02:08:04,067 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 02:08:04,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:08:04,069 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 222 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:04,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 65 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:08:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 02:08:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2024-11-28 02:08:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-28 02:08:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2024-11-28 02:08:04,120 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 90 [2024-11-28 02:08:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:04,121 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2024-11-28 02:08:04,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-28 02:08:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2024-11-28 02:08:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-28 02:08:04,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:04,131 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:04,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:08:04,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:04,336 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:04,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:04,337 INFO L85 PathProgramCache]: Analyzing trace with hash 310128675, now seen corresponding path program 3 times [2024-11-28 02:08:04,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:04,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280641839] [2024-11-28 02:08:04,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:08:04,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:04,649 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:08:04,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2024-11-28 02:08:05,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280641839] [2024-11-28 02:08:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280641839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273459315] [2024-11-28 02:08:05,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:08:05,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:05,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:05,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:05,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:08:05,995 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:08:05,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:06,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:08:06,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2024-11-28 02:08:06,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2024-11-28 02:08:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273459315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:07,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2024-11-28 02:08:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985729103] [2024-11-28 02:08:07,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:07,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 02:08:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:07,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 02:08:07,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 02:08:07,406 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:08:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:08,823 INFO L93 Difference]: Finished difference Result 342 states and 434 transitions. [2024-11-28 02:08:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:08:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 210 [2024-11-28 02:08:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:08,827 INFO L225 Difference]: With dead ends: 342 [2024-11-28 02:08:08,827 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 02:08:08,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 02:08:08,830 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 877 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:08,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 124 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:08:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 02:08:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 192. [2024-11-28 02:08:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-28 02:08:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 259 transitions. [2024-11-28 02:08:08,884 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 259 transitions. Word has length 210 [2024-11-28 02:08:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:08,885 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 259 transitions. [2024-11-28 02:08:08,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:08:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 259 transitions. [2024-11-28 02:08:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2024-11-28 02:08:08,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:08,898 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:08,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:09,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:09,102 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:09,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash -938513681, now seen corresponding path program 4 times [2024-11-28 02:08:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:09,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705691952] [2024-11-28 02:08:09,106 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:08:09,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:09,838 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:08:09,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10472 backedges. 238 proven. 1844 refuted. 0 times theorem prover too weak. 8390 trivial. 0 not checked. [2024-11-28 02:08:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:34,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705691952] [2024-11-28 02:08:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705691952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135073379] [2024-11-28 02:08:34,498 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:08:34,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:34,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:34,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711e2d4f-c044-4201-b2f9-a797d493533b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:08:34,999 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:08:35,000 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:35,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 237 conjuncts are in the unsatisfiable core [2024-11-28 02:08:35,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:35,080 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 25 treesize of output 1 [2024-11-28 02:08:35,088 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 25 treesize of output 1 [2024-11-28 02:13:45,073 INFO L349 Elim1Store]: treesize reduction 177, result has 45.0 percent of original size [2024-11-28 02:13:45,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 118 treesize of output 213 [2024-11-28 02:13:45,303 INFO L349 Elim1Store]: treesize reduction 177, result has 45.0 percent of original size [2024-11-28 02:13:45,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 186 [2024-11-28 02:14:16,733 WARN L286 SmtUtils]: Spent 19.24s on a formula simplification. DAG size of input: 765 DAG size of output: 768 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:21:35,411 INFO L349 Elim1Store]: treesize reduction 180, result has 45.1 percent of original size [2024-11-28 02:21:35,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 118 treesize of output 216 [2024-11-28 02:21:35,629 INFO L349 Elim1Store]: treesize reduction 180, result has 45.1 percent of original size [2024-11-28 02:21:35,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 189 [2024-11-28 02:22:05,422 WARN L286 SmtUtils]: Spent 18.65s on a formula simplification. DAG size of input: 708 DAG size of output: 710 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)